210121022000122 has 4 divisors (see below), whose sum is σ = 315181533000186. Its totient is φ = 105060511000060.

The previous prime is 210121022000089. The next prime is 210121022000167. The reversal of 210121022000122 is 221000220121012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 207010486603881 + 3110535396241 = 14387859^2 + 1763671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210121022000096 and 210121022000105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52530255500029 + ... + 52530255500032.

Almost surely, 2^{210121022000122} is an apocalyptic number.

210121022000122 is a deficient number, since it is larger than the sum of its proper divisors (105060511000064).

210121022000122 is a wasteful number, since it uses less digits than its factorization.

210121022000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105060511000063.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210121022000122 its reverse (221000220121012), we get a palindrome (431121242121134).

The spelling of 210121022000122 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty-two million, one hundred twenty-two", and thus it is an aban number.