21232202131213 has 4 divisors (see below), whose sum is σ = 21233518709760. Its totient is φ = 21230885552668.

The previous prime is 21232202131211. The next prime is 21232202131249. The reversal of 21232202131213 is 31213120223212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21232202131213 - 2¹ = 21232202131211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232202131211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658265083 + ... + 658297336.

It is an arithmetic number, because the mean of its divisors is an integer number (5308379677440).

Almost surely, 2^{21232202131213} is an apocalyptic number.

It is an amenable number.

21232202131213 is a deficient number, since it is larger than the sum of its proper divisors (1316578547).

21232202131213 is a wasteful number, since it uses less digits than its factorization.

21232202131213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316578546.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21232202131213 its reverse (31213120223212), we get a palindrome (52445322354425).

The spelling of 21232202131213 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred two million, one hundred thirty-one thousand, two hundred thirteen".