201123230100012 has 108 divisors (see below), whose sum is σ = 573917239485408. Its totient is φ = 59299232414400.

The previous prime is 201123230099993. The next prime is 201123230100017. The reversal of 201123230100012 is 210001032321102.

201123230100012 is a `hidden beast` number, since 201 + 123 + 230 + 100 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (201123230100017) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 623778564 + ... + 624100907.

Almost surely, 2^{201123230100012} is an apocalyptic number.

201123230100012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201123230100012 is an abundant number, since it is smaller than the sum of its proper divisors (372794009385396).

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

201123230100012 is a wasteful number, since it uses less digits than its factorization.

201123230100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247879540 (or 1247879524 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 201123230100012 its reverse (210001032321102), we get a palindrome (411124262421114).

The spelling of 201123230100012 in words is "two hundred one trillion, one hundred twenty-three billion, two hundred thirty million, one hundred thousand, twelve".