212100211200122 has 24 divisors (see below), whose sum is σ = 371191425206004. Its totient is φ = 90630357293952.

The previous prime is 212100211200113. The next prime is 212100211200131. The reversal of 212100211200122 is 221002112001212.

It is an interprime number because it is at equal distance from previous prime (212100211200113) and next prime (212100211200131).

It can be written as a sum of positive squares in 2 ways, for example, as 211138946645641 + 961264554481 = 14530621^2 + 980441^2 .

It is a super-2 number, since 2×212100211200122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212100211200122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3211076573 + ... + 3211142624.

Almost surely, 2^{212100211200122} is an apocalyptic number.

212100211200122 is a deficient number, since it is larger than the sum of its proper divisors (159091214005882).

212100211200122 is a wasteful number, since it uses less digits than its factorization.

212100211200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422219550 (or 6422219543 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212100211200122 its reverse (221002112001212), we get a palindrome (433102323201334).

The spelling of 212100211200122 in words is "two hundred twelve trillion, one hundred billion, two hundred eleven million, two hundred thousand, one hundred twenty-two".