21002133301 has 4 divisors (see below), whose sum is σ = 21679621504. Its totient is φ = 20324645100.

The previous prime is 21002133293. The next prime is 21002133323. The reversal of 21002133301 is 10333120012.

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 21002133301 - 2³ = 21002133293 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 (21002133101) 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, 338744055 + ... + 338744116.

It is an arithmetic number, because the mean of its divisors is an integer number (5419905376).

Almost surely, 2^21002133301 is an apocalyptic number.

It is an amenable number.

21002133301 is a deficient number, since it is larger than the sum of its proper divisors (677488203).

21002133301 is an equidigital number, since it uses as much as digits as its factorization.

21002133301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677488202.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21002133301 its reverse (10333120012), we get a palindrome (31335253313).

The spelling of 21002133301 in words is "twenty-one billion, two million, one hundred thirty-three thousand, three hundred one".