212012211320 has 64 divisors (see below), whose sum is σ = 587110749120. Its totient is φ = 67098369024.

The previous prime is 212012211317. The next prime is 212012211343. The reversal of 212012211320 is 23112210212.

It is a super-2 number, since 2×212012211320² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29118917 + ... + 29126196.

It is an arithmetic number, because the mean of its divisors is an integer number (9173605455).

Almost surely, 2^212012211320 is an apocalyptic number.

212012211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012211320 is an abundant number, since it is smaller than the sum of its proper divisors (375098537800).

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

212012211320 is a wasteful number, since it uses less digits than its factorization.

212012211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58245144 (or 58245140 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212012211320 its reverse (23112210212), we get a palindrome (235124421532).

The spelling of 212012211320 in words is "two hundred twelve billion, twelve million, two hundred eleven thousand, three hundred twenty".