210021122120102 has 4 divisors (see below), whose sum is σ = 315031683180156. Its totient is φ = 105010561060050.

The previous prime is 210021122120081. The next prime is 210021122120123. The reversal of 210021122120102 is 201021221120012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (210021122120081) and next prime (210021122120123).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52505280530024 + ... + 52505280530027.

It is an arithmetic number, because the mean of its divisors is an integer number (78757920795039).

Almost surely, 2^{210021122120102} is an apocalyptic number.

210021122120102 is a deficient number, since it is larger than the sum of its proper divisors (105010561060054).

210021122120102 is a wasteful number, since it uses less digits than its factorization.

210021122120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105010561060053.

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

Adding to 210021122120102 its reverse (201021221120012), we get a palindrome (411042343240114).

The spelling of 210021122120102 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, one hundred two".