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12120222 = 232020037
BaseRepresentation
bin101110001111…
…000010011110
3211210202211010
4232033002132
511100321342
61111440050
7205006632
oct56170236
924722733
1012120222
116929114
124086026
13268493a
141876dc2
1510e629c
hexb8f09e

12120222 has 8 divisors (see below), whose sum is σ = 24240456. Its totient is φ = 4040072.

The previous prime is 12120181. The next prime is 12120223. The reversal of 12120222 is 22202121.

Adding to 12120222 its reverse (22202121), we get a palindrome (34322343).

It is a sphenic number, since it is the product of 3 distinct primes.

12120222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12120198 and 12120207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010013 + ... + 1010024.

It is an arithmetic number, because the mean of its divisors is an integer number (3030057).

Almost surely, 212120222 is an apocalyptic number.

12120222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12120222 is a wasteful number, since it uses less digits than its factorization.

12120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020042.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 12120222 is about 3481.4109208768. The cubic root of 12120222 is about 229.7048640397.

The spelling of 12120222 in words is "twelve million, one hundred twenty thousand, two hundred twenty-two".

Divisors: 1 2 3 6 2020037 4040074 6060111 12120222