23120020100021 has 32 divisors (see below), whose sum is σ = 26857713738240. Its totient is φ = 19719203765184.

The previous prime is 23120020100003. The next prime is 23120020100077. The reversal of 23120020100021 is 12000102002132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23120020100021 - 2¹⁸ = 23120019837877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23120020099969 and 23120020100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120020100321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5660570 + ... + 8847716.

It is an arithmetic number, because the mean of its divisors is an integer number (839303554320).

Almost surely, 2^{23120020100021} is an apocalyptic number.

It is an amenable number.

23120020100021 is a deficient number, since it is larger than the sum of its proper divisors (3737693638219).

23120020100021 is a wasteful number, since it uses less digits than its factorization.

23120020100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187905.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 23120020100021 its reverse (12000102002132), we get a palindrome (35120122102153).

The spelling of 23120020100021 in words is "twenty-three trillion, one hundred twenty billion, twenty million, one hundred thousand, twenty-one".