201123292156 has 12 divisors (see below), whose sum is σ = 351980334160. Its totient is φ = 100557482400.

The previous prime is 201123292121. The next prime is 201123292157. The reversal of 201123292156 is 651292321102.

It is a super-2 number, since 2×201123292156² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201123292157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930945 + ... + 1126456.

Almost surely, 2^201123292156 is an apocalyptic number.

It is an amenable number.

201123292156 is a deficient number, since it is larger than the sum of its proper divisors (150857042004).

201123292156 is a wasteful number, since it uses less digits than its factorization.

201123292156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081844 (or 2081842 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 201123292156 in words is "two hundred one billion, one hundred twenty-three million, two hundred ninety-two thousand, one hundred fifty-six".