23121012201 has 16 divisors (see below), whose sum is σ = 37086336000. Its totient is φ = 12516637968.

The previous prime is 23121012127. The next prime is 23121012253. The reversal of 23121012201 is 10221012132.

It is not a de Polignac number, because 23121012201 - 2⁷ = 23121012073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23121017201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28973301 + ... + 28974098.

It is an arithmetic number, because the mean of its divisors is an integer number (2317896000).

Almost surely, 2^23121012201 is an apocalyptic number.

23121012201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23121012201 is a deficient number, since it is larger than the sum of its proper divisors (13965323799).

23121012201 is a wasteful number, since it uses less digits than its factorization.

23121012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57947428.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 23121012201 its reverse (10221012132), we get a palindrome (33342024333).

The spelling of 23121012201 in words is "twenty-three billion, one hundred twenty-one million, twelve thousand, two hundred one".