212021100100122 has 16 divisors (see below), whose sum is σ = 435502800206112. Its totient is φ = 68763600032400.

The previous prime is 212021100100099. The next prime is 212021100100211. The reversal of 212021100100122 is 221001001120212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477525000004 + ... + 477525000447.

It is an arithmetic number, because the mean of its divisors is an integer number (27218925012882).

Almost surely, 2^{212021100100122} is an apocalyptic number.

212021100100122 is an abundant number, since it is smaller than the sum of its proper divisors (223481700105990).

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

212021100100122 is a wasteful number, since it uses less digits than its factorization.

212021100100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955050000493.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212021100100122 its reverse (221001001120212), we get a palindrome (433022101220334).

The spelling of 212021100100122 in words is "two hundred twelve trillion, twenty-one billion, one hundred million, one hundred thousand, one hundred twenty-two".