210213121001 has 8 divisors (see below), whose sum is σ = 226602526920. Its totient is φ = 193855024512.

The previous prime is 210213120977. The next prime is 210213121021. The reversal of 210213121001 is 100121312012.

It can be written as a sum of positive squares in 4 ways, for example, as 40683293401 + 169529827600 = 201701^2 + 411740^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210213121001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210213121021) 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, 7813406 + ... + 7840263.

It is an arithmetic number, because the mean of its divisors is an integer number (28325315865).

Almost surely, 2^210213121001 is an apocalyptic number.

It is an amenable number.

210213121001 is a deficient number, since it is larger than the sum of its proper divisors (16389405919).

210213121001 is a wasteful number, since it uses less digits than its factorization.

210213121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15654715.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 210213121001 its reverse (100121312012), we get a palindrome (310334433013).

The spelling of 210213121001 in words is "two hundred ten billion, two hundred thirteen million, one hundred twenty-one thousand, one".