211320310212 has 96 divisors (see below), whose sum is σ = 604389340800. Its totient is φ = 63316915200.

The previous prime is 211320310189. The next prime is 211320310237. The reversal of 211320310212 is 212013023112.

211320310212 is a `hidden beast` number, since 2 + 11 + 320 + 310 + 21 + 2 = 666.

It is a super-2 number, since 2×211320310212² (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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 893589 + ... + 1105052.

It is an arithmetic number, because the mean of its divisors is an integer number (6295722300).

Almost surely, 2^211320310212 is an apocalyptic number.

211320310212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211320310212 is an abundant number, since it is smaller than the sum of its proper divisors (393069030588).

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

211320310212 is a wasteful number, since it uses less digits than its factorization.

211320310212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998754 (or 1998746 counting only the distinct ones).

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

Adding to 211320310212 its reverse (212013023112), we get a palindrome (423333333324).

The spelling of 211320310212 in words is "two hundred eleven billion, three hundred twenty million, three hundred ten thousand, two hundred twelve".