22161019393 has 4 divisors (see below), whose sum is σ = 22183843248. Its totient is φ = 22138195540.

The previous prime is 22161019357. The next prime is 22161019399. The reversal of 22161019393 is 39391016122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22161019393 - 2⁹ = 22161018881 is a prime.

It is a super-2 number, since 2×22161019393² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22161019399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11410471 + ... + 11412412.

It is an arithmetic number, because the mean of its divisors is an integer number (5545960812).

Almost surely, 2^22161019393 is an apocalyptic number.

It is an amenable number.

22161019393 is a deficient number, since it is larger than the sum of its proper divisors (22823855).

22161019393 is an equidigital number, since it uses as much as digits as its factorization.

22161019393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22823854.

The product of its (nonzero) digits is 17496, while the sum is 37.

The spelling of 22161019393 in words is "twenty-two billion, one hundred sixty-one million, nineteen thousand, three hundred ninety-three".