31121110022 has 8 divisors (see below), whose sum is σ = 46694948736. Its totient is φ = 15556127112.

The previous prime is 31121109947. The next prime is 31121110037. The reversal of 31121110022 is 22001112113.

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

It is a junction number, because it is equal to n+sod(n) for n = 31121109979 and 31121110006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2205158 + ... + 2219225.

It is an arithmetic number, because the mean of its divisors is an integer number (5836868592).

Almost surely, 2^31121110022 is an apocalyptic number.

31121110022 is a deficient number, since it is larger than the sum of its proper divisors (15573838714).

31121110022 is a wasteful number, since it uses less digits than its factorization.

31121110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427902.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 31121110022 its reverse (22001112113), we get a palindrome (53122222135).

The spelling of 31121110022 in words is "thirty-one billion, one hundred twenty-one million, one hundred ten thousand, twenty-two".