1031111220112 has 10 divisors (see below), whose sum is σ = 1997777988998. Its totient is φ = 515555610048.

The previous prime is 1031111220089. The next prime is 1031111220149. The reversal of 1031111220112 is 2110221111301.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1026606662656 + 4504557456 = 1013216^2 + 67116^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 64444451257 = 1031111220112 / (1 + 0 + 3 + 1 + 1 + 1 + 1 + 2 + 2 + 0 + 1 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32222225613 + ... + 32222225644.

Almost surely, 2^{1031111220112} is an apocalyptic number.

It is an amenable number.

1031111220112 is a deficient number, since it is larger than the sum of its proper divisors (966666768886).

1031111220112 is an equidigital number, since it uses as much as digits as its factorization.

1031111220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64444451265 (or 64444451259 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1031111220112 its reverse (2110221111301), we get a palindrome (3141332331413).

The spelling of 1031111220112 in words is "one trillion, thirty-one billion, one hundred eleven million, two hundred twenty thousand, one hundred twelve".