21302201001 has 4 divisors (see below), whose sum is σ = 28402934672. Its totient is φ = 14201467332.

The previous prime is 21302200979. The next prime is 21302201003. The reversal of 21302201001 is 10010220312.

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 not a de Polignac number, because 21302201001 - 2¹⁵ = 21302168233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21302201003) 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, 3550366831 + ... + 3550366836.

It is an arithmetic number, because the mean of its divisors is an integer number (7100733668).

Almost surely, 2^21302201001 is an apocalyptic number.

It is an amenable number.

21302201001 is a deficient number, since it is larger than the sum of its proper divisors (7100733671).

21302201001 is an equidigital number, since it uses as much as digits as its factorization.

21302201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100733670.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21302201001 its reverse (10010220312), we get a palindrome (31312421313).

The spelling of 21302201001 in words is "twenty-one billion, three hundred two million, two hundred one thousand, one".