10122400421 has 8 divisors (see below), whose sum is σ = 11569103424. Its totient is φ = 8675858880.

The previous prime is 10122400391. The next prime is 10122400513. The reversal of 10122400421 is 12400422101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10122400421 - 2⁶ = 10122400357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10122400421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122400121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160886 + ... + 214776.

It is an arithmetic number, because the mean of its divisors is an integer number (1446137928).

Almost surely, 2^10122400421 is an apocalyptic number.

It is an amenable number.

10122400421 is a deficient number, since it is larger than the sum of its proper divisors (1446703003).

10122400421 is an equidigital number, since it uses as much as digits as its factorization.

10122400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80731.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10122400421 its reverse (12400422101), we get a palindrome (22522822522).

The spelling of 10122400421 in words is "ten billion, one hundred twenty-two million, four hundred thousand, four hundred twenty-one".