213022012 has 36 divisors (see below), whose sum is σ = 434517384. Its totient is φ = 91113120.

The previous prime is 213022003. The next prime is 213022031. The reversal of 213022012 is 210220312.

It is a junction number, because it is equal to n+sod(n) for n = 213021983 and 213022001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153562 + ... + 154942.

Almost surely, 2^213022012 is an apocalyptic number.

It is an amenable number.

213022012 is an abundant number, since it is smaller than the sum of its proper divisors (221495372).

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

213022012 is a wasteful number, since it uses less digits than its factorization.

213022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 213022012 is about 14595.2736185383. The cubic root of 213022012 is about 597.2298336845.

Adding to 213022012 its reverse (210220312), we get a palindrome (423242324).

It can be divided in two parts, 2130 and 22012, that added together give a palindrome (24142).

The spelling of 213022012 in words is "two hundred thirteen million, twenty-two thousand, twelve".