10121210423 has 4 divisors (see below), whose sum is σ = 10716575760. Its totient is φ = 9525845088.

The previous prime is 10121210387. The next prime is 10121210461. The reversal of 10121210423 is 32401212101.

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 10121210423 - 2⁸ = 10121210167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 595365319 = 10121210423 / (1 + 0 + 1 + 2 + 1 + 2 + 1 + 0 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121210483) 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, 297682643 + ... + 297682676.

It is an arithmetic number, because the mean of its divisors is an integer number (2679143940).

Almost surely, 2^10121210423 is an apocalyptic number.

10121210423 is a deficient number, since it is larger than the sum of its proper divisors (595365337).

10121210423 is an equidigital number, since it uses as much as digits as its factorization.

10121210423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595365336.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10121210423 its reverse (32401212101), we get a palindrome (42522422524).

The spelling of 10121210423 in words is "ten billion, one hundred twenty-one million, two hundred ten thousand, four hundred twenty-three".