20221753369 has 2 divisors, whose sum is σ = 20221753370. Its totient is φ = 20221753368.

The previous prime is 20221753303. The next prime is 20221753373. The reversal of 20221753369 is 96335712202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14643904144 + 5577849225 = 121012^2 + 74685^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221753369 - 2²¹ = 20219656217 is a prime.

It is a super-2 number, since 2×20221753369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20221753169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110876684 + 10110876685.

It is an arithmetic number, because the mean of its divisors is an integer number (10110876685).

Almost surely, 2^20221753369 is an apocalyptic number.

It is an amenable number.

20221753369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221753369 is an equidigital number, since it uses as much as digits as its factorization.

20221753369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 20221753369 in words is "twenty billion, two hundred twenty-one million, seven hundred fifty-three thousand, three hundred sixty-nine".