1031222120 has 32 divisors (see below), whose sum is σ = 2343231720. Its totient is φ = 408403200.

The previous prime is 1031222117. The next prime is 1031222147. The reversal of 1031222120 is 212221301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1019014084 + 12208036 = 31922^2 + 3494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1031222095 and 1031222104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123587 + ... + 131666.

Almost surely, 2^1031222120 is an apocalyptic number.

1031222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031222120 is an abundant number, since it is smaller than the sum of its proper divisors (1312009600).

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

1031222120 is a wasteful number, since it uses less digits than its factorization.

1031222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255365 (or 255361 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1031222120 is about 32112.6473527176. The cubic root of 1031222120 is about 1010.3009004455.

Adding to 1031222120 its reverse (212221301), we get a palindrome (1243443421).

The spelling of 1031222120 in words is "one billion, thirty-one million, two hundred twenty-two thousand, one hundred twenty".