10122102112021 has 4 divisors (see below), whose sum is σ = 10122369838252. Its totient is φ = 10121834385792.

The previous prime is 10122102112019. The next prime is 10122102112033. The reversal of 10122102112021 is 12021120122101.

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 2257521275025 + 7864580836996 = 1502505^2 + 2804386^2 .

It is a cyclic number.

It is not a de Polignac number, because 10122102112021 - 2¹ = 10122102112019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122102111986 and 10122102112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122102112051) 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, 133806396 + ... + 133882021.

It is an arithmetic number, because the mean of its divisors is an integer number (2530592459563).

Almost surely, 2^{10122102112021} is an apocalyptic number.

It is an amenable number.

10122102112021 is a deficient number, since it is larger than the sum of its proper divisors (267726231).

10122102112021 is an equidigital number, since it uses as much as digits as its factorization.

10122102112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267726230.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10122102112021 its reverse (12021120122101), we get a palindrome (22143222234122).

The spelling of 10122102112021 in words is "ten trillion, one hundred twenty-two billion, one hundred two million, one hundred twelve thousand, twenty-one".