20211222313309 has 16 divisors (see below), whose sum is σ = 20608757338752. Its totient is φ = 19816638640128.

The previous prime is 20211222313301. The next prime is 20211222313339. The reversal of 20211222313309 is 90331322211202.

It is a cyclic number.

It is not a de Polignac number, because 20211222313309 - 2³ = 20211222313301 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 (20211222313301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19819617 + ... + 20814409.

It is an arithmetic number, because the mean of its divisors is an integer number (1288047333672).

Almost surely, 2^{20211222313309} is an apocalyptic number.

It is an amenable number.

20211222313309 is a deficient number, since it is larger than the sum of its proper divisors (397535025443).

20211222313309 is a wasteful number, since it uses less digits than its factorization.

20211222313309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996276.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 20211222313309 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, three hundred thirteen thousand, three hundred nine".