21132011031213 has 16 divisors (see below), whose sum is σ = 28347107405760. Its totient is φ = 14002602759936.

The previous prime is 21132011031163. The next prime is 21132011031367. The reversal of 21132011031213 is 31213011023112.

It is not a de Polignac number, because 21132011031213 - 2¹⁷ = 21132010900141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21132011031213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132011021213) 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, 17122395 + ... + 18315032.

It is an arithmetic number, because the mean of its divisors is an integer number (1771694212860).

Almost surely, 2^{21132011031213} is an apocalyptic number.

It is an amenable number.

21132011031213 is a deficient number, since it is larger than the sum of its proper divisors (7215096374547).

21132011031213 is a wasteful number, since it uses less digits than its factorization.

21132011031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35438636.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21132011031213 its reverse (31213011023112), we get a palindrome (52345022054325).

The spelling of 21132011031213 in words is "twenty-one trillion, one hundred thirty-two billion, eleven million, thirty-one thousand, two hundred thirteen".