10102354421 has 4 divisors (see below), whose sum is σ = 10450711500. Its totient is φ = 9753997344.

The previous prime is 10102354399. The next prime is 10102354447. The reversal of 10102354421 is 12445320101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3186602500 + 6915751921 = 56450^2 + 83161^2 .

It is not a de Polignac number, because 10102354421 - 2²² = 10098160117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102354621) 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, 174178496 + ... + 174178553.

It is an arithmetic number, because the mean of its divisors is an integer number (2612677875).

Almost surely, 2^10102354421 is an apocalyptic number.

It is an amenable number.

10102354421 is a deficient number, since it is larger than the sum of its proper divisors (348357079).

10102354421 is an equidigital number, since it uses as much as digits as its factorization.

10102354421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348357078.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 10102354421 its reverse (12445320101), we get a palindrome (22547674522).

The spelling of 10102354421 in words is "ten billion, one hundred two million, three hundred fifty-four thousand, four hundred twenty-one".