1021220311113 has 48 divisors (see below), whose sum is σ = 1594953534720. Its totient is φ = 627448923648.

The previous prime is 1021220311103. The next prime is 1021220311183. The reversal of 1021220311113 is 3111130221201.

1021220311113 is a `hidden beast` number, since 1 + 0 + 21 + 220 + 311 + 113 = 666.

1021220311113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021220311113 - 2⁵ = 1021220311081 is a prime.

It is a super-2 number, since 2×1021220311113² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021220311103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67102881 + ... + 67118097.

It is an arithmetic number, because the mean of its divisors is an integer number (33228198640).

Almost surely, 2^{1021220311113} is an apocalyptic number.

It is an amenable number.

1021220311113 is a deficient number, since it is larger than the sum of its proper divisors (573733223607).

1021220311113 is a wasteful number, since it uses less digits than its factorization.

1021220311113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25886 (or 25883 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1021220311113 its reverse (3111130221201), we get a palindrome (4132350532314).

The spelling of 1021220311113 in words is "one trillion, twenty-one billion, two hundred twenty million, three hundred eleven thousand, one hundred thirteen".