22002021001 has 4 divisors (see below), whose sum is σ = 22513695952. Its totient is φ = 21490346052.

The previous prime is 22002020981. The next prime is 22002021031. The reversal of 22002021001 is 10012020022.

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 22002021001 - 2⁵ = 22002020969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22002021031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255837411 + ... + 255837496.

It is an arithmetic number, because the mean of its divisors is an integer number (5628423988).

Almost surely, 2^22002021001 is an apocalyptic number.

It is an amenable number.

22002021001 is a deficient number, since it is larger than the sum of its proper divisors (511674951).

22002021001 is an equidigital number, since it uses as much as digits as its factorization.

22002021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511674950.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22002021001 its reverse (10012020022), we get a palindrome (32014041023).

The spelling of 22002021001 in words is "twenty-two billion, two million, twenty-one thousand, one".