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1213102122232 = 23721113193112129
BaseRepresentation
bin10001101001110010100…
…001010110010011111000
311021222020011122212210211
4101221302201112103320
5124333413120402412
62325142540320504
7153433541622100
oct21516241262370
94258204585724
101213102122232
11428523582490
12177135543134
138a519b94160
1442a00678200
15218500b0ca7
hex11a728564f8

1213102122232 has 192 divisors, whose sum is σ = 3124632520800. Its totient is φ = 434016092160.

The previous prime is 1213102122209. The next prime is 1213102122241. The reversal of 1213102122232 is 2322212013121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10762744 + ... + 10874872.

Almost surely, 21213102122232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213102122232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562316260400).

1213102122232 is an abundant number, since it is smaller than the sum of its proper divisors (1911530398568).

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

1213102122232 is a wasteful number, since it uses less digits than its factorization.

1213102122232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112366 (or 112355 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1213102122232 its reverse (2322212013121), we get a palindrome (3535314135353).

The spelling of 1213102122232 in words is "one trillion, two hundred thirteen billion, one hundred two million, one hundred twenty-two thousand, two hundred thirty-two".