212111211320 has 16 divisors (see below), whose sum is σ = 477250225560. Its totient is φ = 84844484512.

The previous prime is 212111211313. The next prime is 212111211379. The reversal of 212111211320 is 23112111212.

It is a happy number.

It is a super-2 number, since 2×212111211320² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2651390102 + ... + 2651390181.

Almost surely, 2^212111211320 is an apocalyptic number.

212111211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212111211320 is an abundant number, since it is smaller than the sum of its proper divisors (265139014240).

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

212111211320 is a wasteful number, since it uses less digits than its factorization.

212111211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302780294 (or 5302780290 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 212111211320 its reverse (23112111212), we get a palindrome (235223322532).

The spelling of 212111211320 in words is "two hundred twelve billion, one hundred eleven million, two hundred eleven thousand, three hundred twenty".