10112110100021 has 4 divisors (see below), whose sum is σ = 10122856232844. Its totient is φ = 10101363967200.

The previous prime is 10112110100003. The next prime is 10112110100051. The reversal of 10112110100021 is 12000101121101.

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 6454495924900 + 3657614175121 = 2540570^2 + 1912489^2 .

It is a cyclic number.

It is not a de Polignac number, because 10112110100021 - 2¹⁸ = 10112109837877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10112110099975 and 10112110100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112110100051) 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, 5373065000 + ... + 5373066881.

It is an arithmetic number, because the mean of its divisors is an integer number (2530714058211).

Almost surely, 2^{10112110100021} is an apocalyptic number.

It is an amenable number.

10112110100021 is a deficient number, since it is larger than the sum of its proper divisors (10746132823).

10112110100021 is an equidigital number, since it uses as much as digits as its factorization.

10112110100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10746132822.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10112110100021 its reverse (12000101121101), we get a palindrome (22112211221122).

The spelling of 10112110100021 in words is "ten trillion, one hundred twelve billion, one hundred ten million, one hundred thousand, twenty-one".