212211320310 has 64 divisors (see below), whose sum is σ = 617342031360. Its totient is φ = 51445167840.

The previous prime is 212211320287. The next prime is 212211320329. The reversal of 212211320310 is 13023112212.

212211320310 is a `hidden beast` number, since 2 + 1 + 22 + 11 + 320 + 310 = 666.

It is a super-2 number, since 2×212211320310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35722842 + ... + 35728781.

It is an arithmetic number, because the mean of its divisors is an integer number (9645969240).

Almost surely, 2^212211320310 is an apocalyptic number.

212211320310 is an abundant number, since it is smaller than the sum of its proper divisors (405130711050).

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

212211320310 is a wasteful number, since it uses less digits than its factorization.

212211320310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71451650 (or 71451644 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212211320310 its reverse (13023112212), we get a palindrome (225234432522).

The spelling of 212211320310 in words is "two hundred twelve billion, two hundred eleven million, three hundred twenty thousand, three hundred ten".