213214212220 has 48 divisors (see below), whose sum is σ = 467570654208. Its totient is φ = 81515903040.

The previous prime is 213214212187. The next prime is 213214212227. The reversal of 213214212220 is 22212412312.

It is a junction number, because it is equal to n+sod(n) for n = 213214212191 and 213214212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213214212227) 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, 435775 + ... + 785065.

It is an arithmetic number, because the mean of its divisors is an integer number (9741055296).

Almost surely, 2^213214212220 is an apocalyptic number.

213214212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213214212220 is an abundant number, since it is smaller than the sum of its proper divisors (254356441988).

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

213214212220 is a wasteful number, since it uses less digits than its factorization.

213214212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350650 (or 350648 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 213214212220 its reverse (22212412312), we get a palindrome (235426624532).

The spelling of 213214212220 in words is "two hundred thirteen billion, two hundred fourteen million, two hundred twelve thousand, two hundred twenty".