210121132330031 has 16 divisors (see below), whose sum is σ = 226580260937184. Its totient is φ = 193704291548544.

The previous prime is 210121132329971. The next prime is 210121132330049. The reversal of 210121132330031 is 130033231121012.

It is a cyclic number.

It is not a de Polignac number, because 210121132330031 - 2¹⁴ = 210121132313647 is a prime.

It is a super-2 number, since 2×210121132330031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210121132329979 and 210121132330006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121132330051) 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, 1135715825 + ... + 1135900821.

It is an arithmetic number, because the mean of its divisors is an integer number (14161266308574).

Almost surely, 2^{210121132330031} is an apocalyptic number.

210121132330031 is a deficient number, since it is larger than the sum of its proper divisors (16459128607153).

210121132330031 is a wasteful number, since it uses less digits than its factorization.

210121132330031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298810.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 210121132330031 its reverse (130033231121012), we get a palindrome (340154363451043).

The spelling of 210121132330031 in words is "two hundred ten trillion, one hundred twenty-one billion, one hundred thirty-two million, three hundred thirty thousand, thirty-one".