10020232121 has 4 divisors (see below), whose sum is σ = 10117516032. Its totient is φ = 9922948212.

The previous prime is 10020232063. The next prime is 10020232147. The reversal of 10020232121 is 12123202001.

It is a happy number.

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: 12123202001 = 51137 ⋅237073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020232121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020232096 and 10020232105.

It is not an unprimeable number, because it can be changed into a prime (10020232151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48641801 + ... + 48642006.

It is an arithmetic number, because the mean of its divisors is an integer number (2529379008).

Almost surely, 2^10020232121 is an apocalyptic number.

It is an amenable number.

10020232121 is a deficient number, since it is larger than the sum of its proper divisors (97283911).

10020232121 is an equidigital number, since it uses as much as digits as its factorization.

10020232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97283910.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10020232121 its reverse (12123202001), we get a palindrome (22143434122).

The spelling of 10020232121 in words is "ten billion, twenty million, two hundred thirty-two thousand, one hundred twenty-one".