10113010021 has 4 divisors (see below), whose sum is σ = 10359668844. Its totient is φ = 9866351200.

The previous prime is 10113010003. The next prime is 10113010043. The reversal of 10113010021 is 12001031101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12001031101 = 419 ⋅28642079.

It can be written as a sum of positive squares in 2 ways, for example, as 1554724900 + 8558285121 = 39430^2 + 92511^2 .

It is a cyclic number.

It is not a de Polignac number, because 10113010021 - 2¹¹ = 10113007973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10113010051) 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, 123329350 + ... + 123329431.

It is an arithmetic number, because the mean of its divisors is an integer number (2589917211).

Almost surely, 2^10113010021 is an apocalyptic number.

It is an amenable number.

10113010021 is a deficient number, since it is larger than the sum of its proper divisors (246658823).

10113010021 is an equidigital number, since it uses as much as digits as its factorization.

10113010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246658822.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 10113010021 its reverse (12001031101), we get a palindrome (22114041122).

The spelling of 10113010021 in words is "ten billion, one hundred thirteen million, ten thousand, twenty-one".