31101332200121 has 16 divisors (see below), whose sum is σ = 33892813881600. Its totient is φ = 28442482881408.

The previous prime is 31101332200067. The next prime is 31101332200163. The reversal of 31101332200121 is 12100223310113.

It is a happy number.

It is not a de Polignac number, because 31101332200121 - 2³⁸ = 30826454293177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31101332200093 and 31101332200102.

It is not an unprimeable number, because it can be changed into a prime (31101332200621) 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, 238482206 + ... + 238612583.

It is an arithmetic number, because the mean of its divisors is an integer number (2118300867600).

Almost surely, 2^{31101332200121} is an apocalyptic number.

It is an amenable number.

31101332200121 is a deficient number, since it is larger than the sum of its proper divisors (2791481681479).

31101332200121 is a wasteful number, since it uses less digits than its factorization.

31101332200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477094928.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31101332200121 its reverse (12100223310113), we get a palindrome (43201555510234).

The spelling of 31101332200121 in words is "thirty-one trillion, one hundred one billion, three hundred thirty-two million, two hundred thousand, one hundred twenty-one".