21011022033131 has 16 divisors (see below), whose sum is σ = 22730769966240. Its totient is φ = 19306185200640.

The previous prime is 21011022033017. The next prime is 21011022033137. The reversal of 21011022033131 is 13133022011012.

It is a happy number.

It is not a de Polignac number, because 21011022033131 - 2¹⁰ = 21011022032107 is a prime.

It is a super-2 number, since 2×21011022033131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21011022033137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1529531 + ... + 6660443.

It is an arithmetic number, because the mean of its divisors is an integer number (1420673122890).

Almost surely, 2^{21011022033131} is an apocalyptic number.

21011022033131 is a deficient number, since it is larger than the sum of its proper divisors (1719747933109).

21011022033131 is a wasteful number, since it uses less digits than its factorization.

21011022033131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132366.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21011022033131 its reverse (13133022011012), we get a palindrome (34144044044143).

The spelling of 21011022033131 in words is "twenty-one trillion, eleven billion, twenty-two million, thirty-three thousand, one hundred thirty-one".