1031220021113 has 16 divisors (see below), whose sum is σ = 1046467468800. Its totient is φ = 1016116747200.

The previous prime is 1031220021089. The next prime is 1031220021149. The reversal of 1031220021113 is 3111200221301.

It is a cyclic number.

It is not a de Polignac number, because 1031220021113 - 2³⁰ = 1030146279289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031220021091 and 1031220021100.

It is not an unprimeable number, because it can be changed into a prime (1031220021173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9246320 + ... + 9357182.

It is an arithmetic number, because the mean of its divisors is an integer number (65404216800).

Almost surely, 2^{1031220021113} is an apocalyptic number.

It is an amenable number.

1031220021113 is a deficient number, since it is larger than the sum of its proper divisors (15247447687).

1031220021113 is a wasteful number, since it uses less digits than its factorization.

1031220021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111512.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1031220021113 its reverse (3111200221301), we get a palindrome (4142420242414).

The spelling of 1031220021113 in words is "one trillion, thirty-one billion, two hundred twenty million, twenty-one thousand, one hundred thirteen".