210121022122001 has 8 divisors (see below), whose sum is σ = 211268490320160. Its totient is φ = 208975653592992.

The previous prime is 210121022121953. The next prime is 210121022122019. The reversal of 210121022122001 is 100221220121012.

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

It is a cyclic number.

It is not a de Polignac number, because 210121022122001 - 2⁶ = 210121022121937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210121022122021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524716595 + ... + 525116888.

It is an arithmetic number, because the mean of its divisors is an integer number (26408561290020).

Almost surely, 2^{210121022122001} is an apocalyptic number.

It is an amenable number.

210121022122001 is a deficient number, since it is larger than the sum of its proper divisors (1147468198159).

210121022122001 is a wasteful number, since it uses less digits than its factorization.

210121022122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049834575.

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

Adding to 210121022122001 its reverse (100221220121012), we get a palindrome (310342242243013).

The spelling of 210121022122001 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, one".