3121210312101 has 12 divisors (see below), whose sum is σ = 5152474166112. Its totient is φ = 1783548749736.

The previous prime is 3121210312093. The next prime is 3121210312141. The reversal of 3121210312101 is 1012130121213.

3121210312101 is a `hidden beast` number, since 31 + 212 + 10 + 312 + 101 = 666.

It is not a de Polignac number, because 3121210312101 - 2³ = 3121210312093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121210312141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24771510351 + ... + 24771510476.

It is an arithmetic number, because the mean of its divisors is an integer number (429372847176).

Almost surely, 2^{3121210312101} is an apocalyptic number.

It is an amenable number.

3121210312101 is a deficient number, since it is larger than the sum of its proper divisors (2031263854011).

3121210312101 is a wasteful number, since it uses less digits than its factorization.

3121210312101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49543020840 (or 49543020837 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 3121210312101 its reverse (1012130121213), we get a palindrome (4133340433314).

The spelling of 3121210312101 in words is "three trillion, one hundred twenty-one billion, two hundred ten million, three hundred twelve thousand, one hundred one".