210022010122121 has 4 divisors (see below), whose sum is σ = 210033374353044. Its totient is φ = 210010645891200.

The previous prime is 210022010122049. The next prime is 210022010122147. The reversal of 210022010122121 is 121221010220012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 192039618602896 + 17982391519225 = 13857836^2 + 4240565^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022010122121 - 2³⁴ = 210004830252937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210022010122121.

It is not an unprimeable number, because it can be changed into a prime (210022010122921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5682087740 + ... + 5682124701.

It is an arithmetic number, because the mean of its divisors is an integer number (52508343588261).

Almost surely, 2^{210022010122121} is an apocalyptic number.

It is an amenable number.

210022010122121 is a deficient number, since it is larger than the sum of its proper divisors (11364230923).

210022010122121 is a wasteful number, since it uses less digits than its factorization.

210022010122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11364230922.

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

Adding to 210022010122121 its reverse (121221010220012), we get a palindrome (331243020342133).

The spelling of 210022010122121 in words is "two hundred ten trillion, twenty-two billion, ten million, one hundred twenty-two thousand, one hundred twenty-one".