20203311023121 has 16 divisors (see below), whose sum is σ = 28459543046400. Its totient is φ = 12727740079488.

The previous prime is 20203311023081. The next prime is 20203311023153. The reversal of 20203311023121 is 12132011330202.

It is not a de Polignac number, because 20203311023121 - 2³⁵ = 20168951284753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20203311021121) 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, 2470442356 + ... + 2470450533.

It is an arithmetic number, because the mean of its divisors is an integer number (1778721440400).

Almost surely, 2^{20203311023121} is an apocalyptic number.

It is an amenable number.

20203311023121 is a deficient number, since it is larger than the sum of its proper divisors (8256232023279).

20203311023121 is a wasteful number, since it uses less digits than its factorization.

20203311023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940892968.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20203311023121 its reverse (12132011330202), we get a palindrome (32335322353323).

The spelling of 20203311023121 in words is "twenty trillion, two hundred three billion, three hundred eleven million, twenty-three thousand, one hundred twenty-one".