10020110121 has 24 divisors (see below), whose sum is σ = 16555980480. Its totient is φ = 5720638176.

The previous prime is 10020110099. The next prime is 10020110141. The reversal of 10020110121 is 12101102001.

It is a happy number.

It is not a de Polignac number, because 10020110121 - 2¹⁹ = 10019585833 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (10020110141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66 + ... + 141563.

It is an arithmetic number, because the mean of its divisors is an integer number (689832520).

Almost surely, 2^10020110121 is an apocalyptic number.

It is an amenable number.

10020110121 is a deficient number, since it is larger than the sum of its proper divisors (6535870359).

10020110121 is a wasteful number, since it uses less digits than its factorization.

10020110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142765 (or 142762 counting only the distinct ones).

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

Adding to 10020110121 its reverse (12101102001), we get a palindrome (22121212122).

The spelling of 10020110121 in words is "ten billion, twenty million, one hundred ten thousand, one hundred twenty-one".