1021102020113 has 6 divisors (see below), whose sum is σ = 1187812554066. Its totient is φ = 875230302912.

The previous prime is 1021102020097. The next prime is 1021102020139. The reversal of 1021102020113 is 3110202011201.

It can be written as a sum of positive squares in only one way, i.e., 642671582224 + 378430437889 = 801668^2 + 615167^2 .

It is not a de Polignac number, because 1021102020113 - 2⁴ = 1021102020097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021102020173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10419408320 + ... + 10419408417.

It is an arithmetic number, because the mean of its divisors is an integer number (197968759011).

Almost surely, 2^{1021102020113} is an apocalyptic number.

It is an amenable number.

1021102020113 is a deficient number, since it is larger than the sum of its proper divisors (166710533953).

1021102020113 is an equidigital number, since it uses as much as digits as its factorization.

1021102020113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20838816751 (or 20838816744 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1021102020113 its reverse (3110202011201), we get a palindrome (4131304031314).

The spelling of 1021102020113 in words is "one trillion, twenty-one billion, one hundred two million, twenty thousand, one hundred thirteen".