213535414553021 has 32 divisors (see below), whose sum is σ = 257409235639296. Its totient is φ = 174736834272000.

The previous prime is 213535414553009. The next prime is 213535414553047. The reversal of 213535414553021 is 120355414535312.

It is not a de Polignac number, because 213535414553021 - 2²² = 213535410358717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213535414553051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28525106 + ... + 35224316.

It is an arithmetic number, because the mean of its divisors is an integer number (8044038613728).

Almost surely, 2^{213535414553021} is an apocalyptic number.

It is an amenable number.

213535414553021 is a deficient number, since it is larger than the sum of its proper divisors (43873821086275).

213535414553021 is a wasteful number, since it uses less digits than its factorization.

213535414553021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706673.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 213535414553021 in words is "two hundred thirteen trillion, five hundred thirty-five billion, four hundred fourteen million, five hundred fifty-three thousand, twenty-one".