212100212222220 has 96 divisors (see below), whose sum is σ = 678724384665600. Its totient is φ = 48479783825664.

The previous prime is 212100212222191. The next prime is 212100212222287. The reversal of 212100212222220 is 22222212001212.

212100212222220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 81577266 + ... + 84137094.

It is an arithmetic number, because the mean of its divisors is an integer number (7070045673600).

Almost surely, 2^{212100212222220} is an apocalyptic number.

212100212222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212100212222220 is an abundant number, since it is smaller than the sum of its proper divisors (466624172443380).

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

212100212222220 is a wasteful number, since it uses less digits than its factorization.

212100212222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757127 (or 2757125 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212100212222220 its reverse (22222212001212), we get a palindrome (234322424223432).

The spelling of 212100212222220 in words is "two hundred twelve trillion, one hundred billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty".