10120890121 has 4 divisors (see below), whose sum is σ = 10122625744. Its totient is φ = 10119154500.

The previous prime is 10120890097. The next prime is 10120890161. The reversal of 10120890121 is 12109802101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12109802101 = 6217 ⋅1947853.

It is a cyclic number.

It is not a de Polignac number, because 10120890121 - 2¹³ = 10120881929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10120890161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859035 + ... + 870736.

It is an arithmetic number, because the mean of its divisors is an integer number (2530656436).

Almost surely, 2^10120890121 is an apocalyptic number.

It is an amenable number.

10120890121 is a deficient number, since it is larger than the sum of its proper divisors (1735623).

10120890121 is an equidigital number, since it uses as much as digits as its factorization.

10120890121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735622.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 10120890121 in words is "ten billion, one hundred twenty million, eight hundred ninety thousand, one hundred twenty-one".