22081351397 has 16 divisors (see below), whose sum is σ = 25985667072. Its totient is φ = 18367171200.

The previous prime is 22081351381. The next prime is 22081351423. The reversal of 22081351397 is 79315318022.

It is not a de Polignac number, because 22081351397 - 2⁴ = 22081351381 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 (22081351597) 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 15 ways as a sum of consecutive naturals, for example, 12104 + ... + 210497.

It is an arithmetic number, because the mean of its divisors is an integer number (1624104192).

Almost surely, 2^22081351397 is an apocalyptic number.

It is an amenable number.

22081351397 is a deficient number, since it is larger than the sum of its proper divisors (3904315675).

22081351397 is a wasteful number, since it uses less digits than its factorization.

22081351397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223028.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 22081351397 in words is "twenty-two billion, eighty-one million, three hundred fifty-one thousand, three hundred ninety-seven".