21202211113131 has 16 divisors (see below), whose sum is σ = 29262604845600. Its totient is φ = 13638918252288.

The previous prime is 21202211113049. The next prime is 21202211113133. The reversal of 21202211113131 is 13131111220212.

It is not a de Polignac number, because 21202211113131 - 2¹¹ = 21202211111083 is a prime.

It is a super-2 number, since 2×21202211113131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21202211113098 and 21202211113107.

It is not an unprimeable number, because it can be changed into a prime (21202211113133) 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, 75591396 + ... + 75871361.

It is an arithmetic number, because the mean of its divisors is an integer number (1828912802850).

Almost surely, 2^{21202211113131} is an apocalyptic number.

21202211113131 is a deficient number, since it is larger than the sum of its proper divisors (8060393732469).

21202211113131 is a wasteful number, since it uses less digits than its factorization.

21202211113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151464398.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 21202211113131 its reverse (13131111220212), we get a palindrome (34333322333343).

The spelling of 21202211113131 in words is "twenty-one trillion, two hundred two billion, two hundred eleven million, one hundred thirteen thousand, one hundred thirty-one".