20226721799 has 8 divisors (see below), whose sum is σ = 20341701072. Its totient is φ = 20112016000.

The previous prime is 20226721777. The next prime is 20226721831. The reversal of 20226721799 is 99712762202.

It is a happy number.

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 20226721799 - 2²⁴ = 20209944583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226721759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80897 + ... + 216789.

It is an arithmetic number, because the mean of its divisors is an integer number (2542712634).

Almost surely, 2^20226721799 is an apocalyptic number.

20226721799 is a deficient number, since it is larger than the sum of its proper divisors (114979273).

20226721799 is a wasteful number, since it uses less digits than its factorization.

20226721799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136737.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 20226721799 in words is "twenty billion, two hundred twenty-six million, seven hundred twenty-one thousand, seven hundred ninety-nine".