20021002201 has 4 divisors (see below), whose sum is σ = 20034467712. Its totient is φ = 20007536692.

The previous prime is 20021002159. The next prime is 20021002213. The reversal of 20021002201 is 10220012002.

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 20021002201 - 2¹⁵ = 20020969433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021002231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6730525 + ... + 6733498.

It is an arithmetic number, because the mean of its divisors is an integer number (5008616928).

Almost surely, 2^20021002201 is an apocalyptic number.

It is an amenable number.

20021002201 is a deficient number, since it is larger than the sum of its proper divisors (13465511).

20021002201 is a wasteful number, since it uses less digits than its factorization.

20021002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13465510.

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

Adding to 20021002201 its reverse (10220012002), we get a palindrome (30241014203).

The spelling of 20021002201 in words is "twenty billion, twenty-one million, two thousand, two hundred one".