213222003220 has 24 divisors (see below), whose sum is σ = 447861090600. Its totient is φ = 85270728192.

The previous prime is 213222003173. The next prime is 213222003257. The reversal of 213222003220 is 22300222312.

It can be written as a sum of positive squares in 4 ways, for example, as 10565372944 + 202656630276 = 102788^2 + 450174^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032625 + ... + 1221784.

It is an arithmetic number, because the mean of its divisors is an integer number (18660878775).

Almost surely, 2^213222003220 is an apocalyptic number.

213222003220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213222003220 is an abundant number, since it is smaller than the sum of its proper divisors (234639087380).

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

213222003220 is a wasteful number, since it uses less digits than its factorization.

213222003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259147 (or 2259145 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 213222003220 its reverse (22300222312), we get a palindrome (235522225532).

The spelling of 213222003220 in words is "two hundred thirteen billion, two hundred twenty-two million, three thousand, two hundred twenty".