21332223001 has 4 divisors (see below), whose sum is σ = 22454971600. Its totient is φ = 20209474404.

The previous prime is 21332222941. The next prime is 21332223041. The reversal of 21332223001 is 10032223312.

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 21332223001 - 2¹³ = 21332214809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1122748579 = 21332223001 / (2 + 1 + 3 + 3 + 2 + 2 + 2 + 3 + 0 + 0 + 1).

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 21332223001.

It is not an unprimeable number, because it can be changed into a prime (21332223041) 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, 561374271 + ... + 561374308.

It is an arithmetic number, because the mean of its divisors is an integer number (5613742900).

Almost surely, 2^21332223001 is an apocalyptic number.

It is an amenable number.

21332223001 is a deficient number, since it is larger than the sum of its proper divisors (1122748599).

21332223001 is a wasteful number, since it uses less digits than its factorization.

21332223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122748598.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21332223001 its reverse (10032223312), we get a palindrome (31364446313).

The spelling of 21332223001 in words is "twenty-one billion, three hundred thirty-two million, two hundred twenty-three thousand, one".