210122201121 has 16 divisors (see below), whose sum is σ = 320195862528. Its totient is φ = 120066210000.

The previous prime is 210122201111. The next prime is 210122201153. The reversal of 210122201121 is 121102221012.

It is not a de Polignac number, because 210122201121 - 2⁹ = 210122200609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210122201121.

It is not an unprimeable number, because it can be changed into a prime (210122201111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665146 + ... + 928796.

It is an arithmetic number, because the mean of its divisors is an integer number (20012241408).

Almost surely, 2^210122201121 is an apocalyptic number.

210122201121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210122201121 is a deficient number, since it is larger than the sum of its proper divisors (110073661407).

210122201121 is a wasteful number, since it uses less digits than its factorization.

210122201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301612.

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

Adding to 210122201121 its reverse (121102221012), we get a palindrome (331224422133).

The spelling of 210122201121 in words is "two hundred ten billion, one hundred twenty-two million, two hundred one thousand, one hundred twenty-one".