10100021112121 has 8 divisors (see below), whose sum is σ = 10256682855744. Its totient is φ = 9943533343920.

The previous prime is 10100021112109. The next prime is 10100021112157. The reversal of 10100021112121 is 12121112000101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10100021112121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10100021110121) 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 7 ways as a sum of consecutive naturals, for example, 43376845 + ... + 43609066.

It is an arithmetic number, because the mean of its divisors is an integer number (1282085356968).

Almost surely, 2^{10100021112121} is an apocalyptic number.

It is an amenable number.

10100021112121 is a deficient number, since it is larger than the sum of its proper divisors (156661743623).

10100021112121 is an equidigital number, since it uses as much as digits as its factorization.

10100021112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86987711.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10100021112121 its reverse (12121112000101), we get a palindrome (22221133112222).

The spelling of 10100021112121 in words is "ten trillion, one hundred billion, twenty-one million, one hundred twelve thousand, one hundred twenty-one".