31222101000 has 64 divisors (see below), whose sum is σ = 97412964480. Its totient is φ = 8325892800.

The previous prime is 31222100999. The next prime is 31222101011. The reversal of 31222101000 is 10122213.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5200684 + ... + 5206683.

It is an arithmetic number, because the mean of its divisors is an integer number (1522077570).

Almost surely, 2^31222101000 is an apocalyptic number.

31222101000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31222101000 is an abundant number, since it is smaller than the sum of its proper divisors (66190863480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31222101000 is a wasteful number, since it uses less digits than its factorization.

31222101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10407391 (or 10407377 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 31222101000 its reverse (10122213), we get a palindrome (31232223213).

The spelling of 31222101000 in words is "thirty-one billion, two hundred twenty-two million, one hundred one thousand".