213055531220 has 48 divisors (see below), whose sum is σ = 511395628800. Its totient is φ = 73038703104.

The previous prime is 213055531217. The next prime is 213055531259. The reversal of 213055531220 is 22135550312.

213055531220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1115372 + ... + 1292348.

It is an arithmetic number, because the mean of its divisors is an integer number (10654075600).

Almost surely, 2^213055531220 is an apocalyptic number.

213055531220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213055531220 is an abundant number, since it is smaller than the sum of its proper divisors (298340097580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213055531220 is a wasteful number, since it uses less digits than its factorization.

213055531220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185592 (or 185590 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 213055531220 in words is "two hundred thirteen billion, fifty-five million, five hundred thirty-one thousand, two hundred twenty".