20310202221 has 8 divisors (see below), whose sum is σ = 27085945824. Its totient is φ = 13537296720.

The previous prime is 20310202207. The next prime is 20310202273. The reversal of 20310202221 is 12220201302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20310202221 - 2⁷ = 20310202093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20310202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310202321) 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 7 ways as a sum of consecutive naturals, for example, 692770 + ... + 721491.

It is an arithmetic number, because the mean of its divisors is an integer number (3385743228).

Almost surely, 2^20310202221 is an apocalyptic number.

It is an amenable number.

20310202221 is a deficient number, since it is larger than the sum of its proper divisors (6775743603).

20310202221 is a wasteful number, since it uses less digits than its factorization.

20310202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419051.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20310202221 its reverse (12220201302), we get a palindrome (32530403523).

The spelling of 20310202221 in words is "twenty billion, three hundred ten million, two hundred two thousand, two hundred twenty-one".