10021002402421 has 4 divisors (see below), whose sum is σ = 10456698159072. Its totient is φ = 9585306645772.

The previous prime is 10021002402419. The next prime is 10021002402461. The reversal of 10021002402421 is 12420420012001.

10021002402421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10021002402421 - 2¹ = 10021002402419 is a prime.

It is a super-2 number, since 2×10021002402421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021002402461) 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, 217847878291 + ... + 217847878336.

It is an arithmetic number, because the mean of its divisors is an integer number (2614174539768).

Almost surely, 2^{10021002402421} is an apocalyptic number.

It is an amenable number.

10021002402421 is a deficient number, since it is larger than the sum of its proper divisors (435695756651).

10021002402421 is an equidigital number, since it uses as much as digits as its factorization.

10021002402421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435695756650.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10021002402421 its reverse (12420420012001), we get a palindrome (22441422414422).

The spelling of 10021002402421 in words is "ten trillion, twenty-one billion, two million, four hundred two thousand, four hundred twenty-one".