212021000022122 has 8 divisors (see below), whose sum is σ = 320845938086916. Its totient is φ = 105072353993152.

The previous prime is 212021000022109. The next prime is 212021000022187. The reversal of 212021000022122 is 221220000120212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 211745250057961 + 275749964161 = 14551469^2 + 525119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212021000022122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469073008673 + ... + 469073009124.

Almost surely, 2^{212021000022122} is an apocalyptic number.

212021000022122 is a deficient number, since it is larger than the sum of its proper divisors (108824938064794).

212021000022122 is a wasteful number, since it uses less digits than its factorization.

212021000022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938146017912.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212021000022122 its reverse (221220000120212), we get a palindrome (433241000142334).

The spelling of 212021000022122 in words is "two hundred twelve trillion, twenty-one billion, twenty-two thousand, one hundred twenty-two".