210021122121110 has 16 divisors (see below), whose sum is σ = 378039442237632. Its totient is φ = 84008132755200.

The previous prime is 210021122121071. The next prime is 210021122121149. The reversal of 210021122121110 is 11121221120012.

210021122121110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (210021122121071) and next prime (210021122121149).

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, 36711611 + ... + 42045030.

It is an arithmetic number, because the mean of its divisors is an integer number (23627465139852).

Almost surely, 2^{210021122121110} is an apocalyptic number.

210021122121110 is a deficient number, since it is larger than the sum of its proper divisors (168018320116522).

210021122121110 is a wasteful number, since it uses less digits than its factorization.

210021122121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79023319.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210021122121110 its reverse (11121221120012), we get a palindrome (221142343241122).

The spelling of 210021122121110 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred ten".