210102002121221 has 8 divisors (see below), whose sum is σ = 241589681669184. Its totient is φ = 178982599527360.

The previous prime is 210102002121197. The next prime is 210102002121251. The reversal of 210102002121221 is 122121200201012.

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-210102002121221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210102002121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102002121251) 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, 92069237300 + ... + 92069239581.

It is an arithmetic number, because the mean of its divisors is an integer number (30198710208648).

Almost surely, 2^{210102002121221} is an apocalyptic number.

It is an amenable number.

210102002121221 is a deficient number, since it is larger than the sum of its proper divisors (31487679547963).

210102002121221 is a wasteful number, since it uses less digits than its factorization.

210102002121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184138477051.

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

Adding to 210102002121221 its reverse (122121200201012), we get a palindrome (332223202322233).

The spelling of 210102002121221 in words is "two hundred ten trillion, one hundred two billion, two million, one hundred twenty-one thousand, two hundred twenty-one".