22012112123001 has 128 divisors (see below), whose sum is σ = 45294597734400. Its totient is φ = 10191283764480.

The previous prime is 22012112122999. The next prime is 22012112123003. The reversal of 22012112123001 is 10032121121022.

22012112123001 is a `hidden beast` number, since 2 + 201 + 211 + 21 + 230 + 0 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (22012112122999) and next prime (22012112123003).

It is not a de Polignac number, because 22012112123001 - 2¹ = 22012112122999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22012112123003) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13258441 + ... + 14826006.

It is an arithmetic number, because the mean of its divisors is an integer number (353864044800).

Almost surely, 2^{22012112123001} is an apocalyptic number.

22012112123001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22012112123001 is an abundant number, since it is smaller than the sum of its proper divisors (23282485611399).

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

22012112123001 is a wasteful number, since it uses less digits than its factorization.

22012112123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28084516 (or 28084510 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 22012112123001 its reverse (10032121121022), we get a palindrome (32044233244023).

The spelling of 22012112123001 in words is "twenty-two trillion, twelve billion, one hundred twelve million, one hundred twenty-three thousand, one".