10122100001021 has 4 divisors (see below), whose sum is σ = 10123238988192. Its totient is φ = 10120961013852.

The previous prime is 10122100001017. The next prime is 10122100001029. The reversal of 10122100001021 is 12010000122101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10122100001021 - 2² = 10122100001017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122100000993 and 10122100001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122100001029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569480255 + ... + 569498028.

It is an arithmetic number, because the mean of its divisors is an integer number (2530809747048).

Almost surely, 2^{10122100001021} is an apocalyptic number.

It is an amenable number.

10122100001021 is a deficient number, since it is larger than the sum of its proper divisors (1138987171).

10122100001021 is an equidigital number, since it uses as much as digits as its factorization.

10122100001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138987170.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10122100001021 its reverse (12010000122101), we get a palindrome (22132100123122).

The spelling of 10122100001021 in words is "ten trillion, one hundred twenty-two billion, one hundred million, one thousand, twenty-one".