10012121023 has 4 divisors (see below), whose sum is σ = 10068054840. Its totient is φ = 9956187208.

The previous prime is 10012120973. The next prime is 10012121051. The reversal of 10012121023 is 32012121001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10012121023 - 2²⁹ = 9475250111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012120994 and 10012121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012121923) 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, 27966640 + ... + 27966997.

It is an arithmetic number, because the mean of its divisors is an integer number (2517013710).

Almost surely, 2^10012121023 is an apocalyptic number.

10012121023 is a deficient number, since it is larger than the sum of its proper divisors (55933817).

10012121023 is an equidigital number, since it uses as much as digits as its factorization.

10012121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55933816.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10012121023 its reverse (32012121001), we get a palindrome (42024242024).

The spelling of 10012121023 in words is "ten billion, twelve million, one hundred twenty-one thousand, twenty-three".