210121211002 has 8 divisors (see below), whose sum is σ = 317003677236. Its totient is φ = 104453318592.

The previous prime is 210121210997. The next prime is 210121211023. The reversal of 210121211002 is 200112121012.

It can be written as a sum of positive squares in 2 ways, for example, as 208694562561 + 1426648441 = 456831^2 + 37771^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303643023 + ... + 303643714.

Almost surely, 2^210121211002 is an apocalyptic number.

210121211002 is a deficient number, since it is larger than the sum of its proper divisors (106882466234).

210121211002 is a wasteful number, since it uses less digits than its factorization.

210121211002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607286912.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210121211002 its reverse (200112121012), we get a palindrome (410233332014).

The spelling of 210121211002 in words is "two hundred ten billion, one hundred twenty-one million, two hundred eleven thousand, two".