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21232223032120 = 2351415937488917
BaseRepresentation
bin1001101001111100000110…
…00111001001001100111000
32210011210002010111020210021
410310332003013021030320
510240332043044011440
6113053540522100224
74320656165000662
oct464760307111470
983153063436707
1021232223032120
116846598419091
12246ab4464a674
13bb026169a749
14535906145532
1526c47391684a
hex134f831c9338

21232223032120 has 32 divisors (see below), whose sum is σ = 47775877099200. Its totient is φ = 8492289163648.

The previous prime is 21232223032073. The next prime is 21232223032123. The reversal of 21232223032120 is 2123032223212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232223032123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18178099 + ... + 19310818.

It is an arithmetic number, because the mean of its divisors is an integer number (1492996159350).

Almost surely, 221232223032120 is an apocalyptic number.

21232223032120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21232223032120 is an abundant number, since it is smaller than the sum of its proper divisors (26543654067080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21232223032120 is a wasteful number, since it uses less digits than its factorization.

21232223032120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37503087 (or 37503083 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21232223032120 its reverse (2123032223212), we get a palindrome (23355255255332).

The spelling of 21232223032120 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred twenty-three million, thirty-two thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 14159 28318 56636 70795 113272 141590 283180 566360 37488917 74977834 149955668 187444585 299911336 374889170 749778340 1499556680 530805575803 1061611151606 2123222303212 2654027879015 4246444606424 5308055758030 10616111516060 21232223032120