100302321421 has 4 divisors (see below), whose sum is σ = 101034455292. Its totient is φ = 99570187552.

The previous prime is 100302321409. The next prime is 100302321439. The reversal of 100302321421 is 124123203001.

It is a happy number.

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 24973480900 + 75328840521 = 158030^2 + 274461^2 .

It is a cyclic number.

It is not a de Polignac number, because 100302321421 - 2¹¹ = 100302319373 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 (100302321451) 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, 366066730 + ... + 366067003.

It is an arithmetic number, because the mean of its divisors is an integer number (25258613823).

Almost surely, 2^100302321421 is an apocalyptic number.

It is an amenable number.

100302321421 is a deficient number, since it is larger than the sum of its proper divisors (732133871).

100302321421 is an equidigital number, since it uses as much as digits as its factorization.

100302321421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732133870.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 100302321421 its reverse (124123203001), we get a palindrome (224425524422).

The spelling of 100302321421 in words is "one hundred billion, three hundred two million, three hundred twenty-one thousand, four hundred twenty-one".