31222541121 has 16 divisors (see below), whose sum is σ = 43077303360. Its totient is φ = 20091794240.

The previous prime is 31222541117. The next prime is 31222541123. The reversal of 31222541121 is 12114522213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31222541121 - 2² = 31222541117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31222541091 and 31222541100.

It is not an unprimeable number, because it can be changed into a prime (31222541123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285466 + ... + 379388.

It is an arithmetic number, because the mean of its divisors is an integer number (2692331460).

Almost surely, 2^31222541121 is an apocalyptic number.

It is an amenable number.

31222541121 is a deficient number, since it is larger than the sum of its proper divisors (11854762239).

31222541121 is a wasteful number, since it uses less digits than its factorization.

31222541121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97776.

The product of its digits is 960, while the sum is 24.

The spelling of 31222541121 in words is "thirty-one billion, two hundred twenty-two million, five hundred forty-one thousand, one hundred twenty-one".