210021121122201 has 32 divisors (see below), whose sum is σ = 311394984683520. Its totient is φ = 139900427955792.

The previous prime is 210021121122193. The next prime is 210021121122209. The reversal of 210021121122201 is 102221121120012.

210021121122201 is a `hidden beast` number, since 21 + 0 + 0 + 211 + 211 + 2 + 220 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (210021121122193) and next prime (210021121122209).

It is not a de Polignac number, because 210021121122201 - 2³ = 210021121122193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210021121122209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 876696300 + ... + 876935826.

It is an arithmetic number, because the mean of its divisors is an integer number (9731093271360).

Almost surely, 2^{210021121122201} is an apocalyptic number.

It is an amenable number.

210021121122201 is a deficient number, since it is larger than the sum of its proper divisors (101373863561319).

210021121122201 is a wasteful number, since it uses less digits than its factorization.

210021121122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265762 (or 265756 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210021121122201 its reverse (102221121120012), we get a palindrome (312242242242213).

The spelling of 210021121122201 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred one".