10010021121 has 16 divisors (see below), whose sum is σ = 15032809920. Its totient is φ = 6581930400.

The previous prime is 10010021111. The next prime is 10010021183. The reversal of 10010021121 is 12112001001.

It is a happy number.

It is not a de Polignac number, because 10010021121 - 2¹¹ = 10010019073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10010021111) 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 15 ways as a sum of consecutive naturals, for example, 2537355 + ... + 2541296.

It is an arithmetic number, because the mean of its divisors is an integer number (939550620).

Almost surely, 2^10010021121 is an apocalyptic number.

It is an amenable number.

10010021121 is a deficient number, since it is larger than the sum of its proper divisors (5022788799).

10010021121 is an equidigital number, since it uses as much as digits as its factorization.

10010021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078733 (or 5078727 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10010021121 its reverse (12112001001), we get a palindrome (22122022122).

The spelling of 10010021121 in words is "ten billion, ten million, twenty-one thousand, one hundred twenty-one".