31110220222021 has 8 divisors (see below), whose sum is σ = 31114240426944. Its totient is φ = 31106200266240.

The previous prime is 31110220222019. The next prime is 31110220222027. The reversal of 31110220222021 is 12022202201113.

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

It is a cyclic number.

It is not a de Polignac number, because 31110220222021 - 2¹ = 31110220222019 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 31110220222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31110220222027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397246150 + ... + 397324456.

It is an arithmetic number, because the mean of its divisors is an integer number (3889280053368).

Almost surely, 2^{31110220222021} is an apocalyptic number.

It is an amenable number.

31110220222021 is a deficient number, since it is larger than the sum of its proper divisors (4020204923).

31110220222021 is a wasteful number, since it uses less digits than its factorization.

31110220222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124571.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31110220222021 its reverse (12022202201113), we get a palindrome (43132422423134).

The spelling of 31110220222021 in words is "thirty-one trillion, one hundred ten billion, two hundred twenty million, two hundred twenty-two thousand, twenty-one".