210221121102 has 16 divisors (see below), whose sum is σ = 420556754640. Its totient is φ = 70054621632.

The previous prime is 210221121059. The next prime is 210221121137. The reversal of 210221121102 is 201121122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4747477 + ... + 4791552.

It is an arithmetic number, because the mean of its divisors is an integer number (26284797165).

Almost surely, 2^210221121102 is an apocalyptic number.

210221121102 is an abundant number, since it is smaller than the sum of its proper divisors (210335633538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210221121102 is a wasteful number, since it uses less digits than its factorization.

210221121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9542707.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210221121102 its reverse (201121122012), we get a palindrome (411342243114).

The spelling of 210221121102 in words is "two hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred two".