213271767021 has 16 divisors (see below), whose sum is σ = 287840001600. Its totient is φ = 140445495168.

The previous prime is 213271767013. The next prime is 213271767047. The reversal of 213271767021 is 120767172312.

It is not a de Polignac number, because 213271767021 - 2³ = 213271767013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213271767011) 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, 119866 + ... + 664011.

It is an arithmetic number, because the mean of its divisors is an integer number (17990000100).

Almost surely, 2^213271767021 is an apocalyptic number.

It is an amenable number.

213271767021 is a deficient number, since it is larger than the sum of its proper divisors (74568234579).

213271767021 is a wasteful number, since it uses less digits than its factorization.

213271767021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784988.

The product of its (nonzero) digits is 49392, while the sum is 39.

The spelling of 213271767021 in words is "two hundred thirteen billion, two hundred seventy-one million, seven hundred sixty-seven thousand, twenty-one".