212112122231220 has 96 divisors (see below), whose sum is σ = 642229845078528. Its totient is φ = 52103303104512.

The previous prime is 212112122231189. The next prime is 212112122231239. The reversal of 212112122231220 is 22132221211212.

212112122231220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212112122231220² (a number of 29 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 31 ways as a sum of consecutive naturals, for example, 2212218667 + ... + 2212314546.

It is an arithmetic number, because the mean of its divisors is an integer number (6689894219568).

Almost surely, 2^{212112122231220} is an apocalyptic number.

212112122231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112122231220 is an abundant number, since it is smaller than the sum of its proper divisors (430117722847308).

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

212112122231220 is a wasteful number, since it uses less digits than its factorization.

212112122231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424533289 (or 4424533287 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 212112122231220 its reverse (22132221211212), we get a palindrome (234244343442432).

The spelling of 212112122231220 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty".