3031112100221 has 4 divisors (see below), whose sum is σ = 3031135968000. Its totient is φ = 3031088232444.

The previous prime is 3031112100167. The next prime is 3031112100271. The reversal of 3031112100221 is 1220012111303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3031112100221 - 2¹⁴ = 3031112083837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3031112100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031112100271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11742371 + ... + 11997728.

It is an arithmetic number, because the mean of its divisors is an integer number (757783992000).

Almost surely, 2^{3031112100221} is an apocalyptic number.

It is an amenable number.

3031112100221 is a deficient number, since it is larger than the sum of its proper divisors (23867779).

3031112100221 is a wasteful number, since it uses less digits than its factorization.

3031112100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23867778.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 3031112100221 its reverse (1220012111303), we get a palindrome (4251124211524).

The spelling of 3031112100221 in words is "three trillion, thirty-one billion, one hundred twelve million, one hundred thousand, two hundred twenty-one".