10120121021 has 8 divisors (see below), whose sum is σ = 10135957440. Its totient is φ = 10104299712.

The previous prime is 10120120999. The next prime is 10120121047. The reversal of 10120121021 is 12012102101.

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

It is a cyclic number.

It is not a de Polignac number, because 10120121021 - 2¹⁸ = 10119858877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10120120993 and 10120121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120171021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2205896 + ... + 2210478.

It is an arithmetic number, because the mean of its divisors is an integer number (1266994680).

Almost surely, 2^10120121021 is an apocalyptic number.

It is an amenable number.

10120121021 is a deficient number, since it is larger than the sum of its proper divisors (15836419).

10120121021 is a wasteful number, since it uses less digits than its factorization.

10120121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555.

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

Adding to 10120121021 its reverse (12012102101), we get a palindrome (22132223122).

The spelling of 10120121021 in words is "ten billion, one hundred twenty million, one hundred twenty-one thousand, twenty-one".