22256353381 has 2 divisors, whose sum is σ = 22256353382. Its totient is φ = 22256353380.

The previous prime is 22256353333. The next prime is 22256353391. The reversal of 22256353381 is 18335365222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21171705025 + 1084648356 = 145505^2 + 32934^2 .

It is a cyclic number.

It is not a de Polignac number, because 22256353381 - 2⁹ = 22256352869 is a prime.

It is a super-2 number, since 2×22256353381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22256353321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11128176690 + 11128176691.

It is an arithmetic number, because the mean of its divisors is an integer number (11128176691).

Almost surely, 2^22256353381 is an apocalyptic number.

It is an amenable number.

22256353381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22256353381 is an equidigital number, since it uses as much as digits as its factorization.

22256353381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 40.

The spelling of 22256353381 in words is "twenty-two billion, two hundred fifty-six million, three hundred fifty-three thousand, three hundred eighty-one".