212100120122 has 32 divisors (see below), whose sum is σ = 354020696064. Its totient is φ = 94497505200.

The previous prime is 212100120097. The next prime is 212100120139. The reversal of 212100120122 is 221021001212.

It is a junction number, because it is equal to n+sod(n) for n = 212100120097 and 212100120106.

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, 225404 + ... + 689207.

It is an arithmetic number, because the mean of its divisors is an integer number (11063146752).

Almost surely, 2^212100120122 is an apocalyptic number.

212100120122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212100120122 is a deficient number, since it is larger than the sum of its proper divisors (141920575942).

212100120122 is a wasteful number, since it uses less digits than its factorization.

212100120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914834.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212100120122 its reverse (221021001212), we get a palindrome (433121121334).

The spelling of 212100120122 in words is "two hundred twelve billion, one hundred million, one hundred twenty thousand, one hundred twenty-two".