21131353313134 has 16 divisors (see below), whose sum is σ = 32166531421200. Its totient is φ = 10410259221504.

The previous prime is 21131353313117. The next prime is 21131353313141. The reversal of 21131353313134 is 43131335313112.

It is a self number, because there is not a number n which added to its sum of digits gives 21131353313134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270723027 + ... + 270801070.

It is an arithmetic number, because the mean of its divisors is an integer number (2010408213825).

Almost surely, 2^{21131353313134} is an apocalyptic number.

21131353313134 is a deficient number, since it is larger than the sum of its proper divisors (11035178108066).

21131353313134 is a wasteful number, since it uses less digits than its factorization.

21131353313134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541524387.

The product of its digits is 29160, while the sum is 34.

Adding to 21131353313134 its reverse (43131335313112), we get a palindrome (64262688626246).

The spelling of 21131353313134 in words is "twenty-one trillion, one hundred thirty-one billion, three hundred fifty-three million, three hundred thirteen thousand, one hundred thirty-four".