212021111100122 has 16 divisors (see below), whose sum is σ = 321238793046600. Its totient is φ = 104943267385920.

The previous prime is 212021111100091. The next prime is 212021111100137. The reversal of 212021111100122 is 221001111120212.

It can be written as a sum of positive squares in 4 ways, for example, as 60929592559081 + 151091518541041 = 7805741^2 + 12291929^2 .

It is a super-2 number, since 2×212021111100122² (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 212021111100122.

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, 438249629 + ... + 438733152.

Almost surely, 2^{212021111100122} is an apocalyptic number.

212021111100122 is a deficient number, since it is larger than the sum of its proper divisors (109217681946478).

212021111100122 is a wasteful number, since it uses less digits than its factorization.

212021111100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876984001.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212021111100122 its reverse (221001111120212), we get a palindrome (433022222220334).

The spelling of 212021111100122 in words is "two hundred twelve trillion, twenty-one billion, one hundred eleven million, one hundred thousand, one hundred twenty-two".