20101022113 has 4 divisors (see below), whose sum is σ = 20101757508. Its totient is φ = 20100286720.

The previous prime is 20101022101. The next prime is 20101022129. The reversal of 20101022113 is 31122010102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8476516624 + 11624505489 = 92068^2 + 107817^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101022113 - 2³³ = 11511087521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101022093 and 20101022102.

It is not an unprimeable number, because it can be changed into a prime (20101028113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325048 + ... + 381913.

It is an arithmetic number, because the mean of its divisors is an integer number (5025439377).

Almost surely, 2^20101022113 is an apocalyptic number.

It is an amenable number.

20101022113 is a deficient number, since it is larger than the sum of its proper divisors (735395).

20101022113 is an equidigital number, since it uses as much as digits as its factorization.

20101022113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735394.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20101022113 its reverse (31122010102), we get a palindrome (51223032215).

The spelling of 20101022113 in words is "twenty billion, one hundred one million, twenty-two thousand, one hundred thirteen".