20411021525131 has 16 divisors (see below), whose sum is σ = 20752688996928. Its totient is φ = 20072130480000.

The previous prime is 20411021525113. The next prime is 20411021525159. The reversal of 20411021525131 is 13152512011402.

It is a cyclic number.

It is not a de Polignac number, because 20411021525131 - 2⁵ = 20411021525099 is a prime.

It is a super-2 number, since 2×20411021525131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20411021525131.

It is not an unprimeable number, because it can be changed into a prime (20411021525101) 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, 106859845 + ... + 107050681.

It is an arithmetic number, because the mean of its divisors is an integer number (1297043062308).

Almost surely, 2^{20411021525131} is an apocalyptic number.

20411021525131 is a deficient number, since it is larger than the sum of its proper divisors (341667471797).

20411021525131 is a wasteful number, since it uses less digits than its factorization.

20411021525131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198102.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 20411021525131 its reverse (13152512011402), we get a palindrome (33563533536533).

The spelling of 20411021525131 in words is "twenty trillion, four hundred eleven billion, twenty-one million, five hundred twenty-five thousand, one hundred thirty-one".