21022203001 has 4 divisors (see below), whose sum is σ = 21022826832. Its totient is φ = 21021579172.

The previous prime is 21022202987. The next prime is 21022203023. The reversal of 21022203001 is 10030222012.

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 21022203001 - 2¹⁷ = 21022071929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022213001) 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, 258295 + ... + 329788.

It is an arithmetic number, because the mean of its divisors is an integer number (5255706708).

Almost surely, 2^21022203001 is an apocalyptic number.

It is an amenable number.

21022203001 is a deficient number, since it is larger than the sum of its proper divisors (623831).

21022203001 is an equidigital number, since it uses as much as digits as its factorization.

21022203001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623830.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21022203001 its reverse (10030222012), we get a palindrome (31052425013).

The spelling of 21022203001 in words is "twenty-one billion, twenty-two million, two hundred three thousand, one".