210131102121 has 8 divisors (see below), whose sum is σ = 281131032000. Its totient is φ = 139609286832.

The previous prime is 210131102113. The next prime is 210131102179. The reversal of 210131102121 is 121201131012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210131102121 - 2³ = 210131102113 is a prime.

It is a super-2 number, since 2×210131102121² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210131102121.

It is not an unprimeable number, because it can be changed into a prime (210131102221) 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, 119527621 + ... + 119529378.

It is an arithmetic number, because the mean of its divisors is an integer number (35141379000).

Almost surely, 2^210131102121 is an apocalyptic number.

It is an amenable number.

210131102121 is a deficient number, since it is larger than the sum of its proper divisors (70999929879).

210131102121 is a wasteful number, since it uses less digits than its factorization.

210131102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239057295.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 210131102121 its reverse (121201131012), we get a palindrome (331332233133).

The spelling of 210131102121 in words is "two hundred ten billion, one hundred thirty-one million, one hundred two thousand, one hundred twenty-one".