20122202221 has 8 divisors (see below), whose sum is σ = 22008812544. Its totient is φ = 18245145120.

The previous prime is 20122202209. The next prime is 20122202227. The reversal of 20122202221 is 12220222102.

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

It is a cyclic number.

It is not a de Polignac number, because 20122202221 - 2²⁷ = 19987984493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122202195 and 20122202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122202227) 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 7 ways as a sum of consecutive naturals, for example, 2383896 + ... + 2392321.

It is an arithmetic number, because the mean of its divisors is an integer number (2751101568).

Almost surely, 2^20122202221 is an apocalyptic number.

It is an amenable number.

20122202221 is a deficient number, since it is larger than the sum of its proper divisors (1886610323).

20122202221 is a wasteful number, since it uses less digits than its factorization.

20122202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4776611.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20122202221 its reverse (12220222102), we get a palindrome (32342424323).

The spelling of 20122202221 in words is "twenty billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty-one".