22161234205 has 8 divisors (see below), whose sum is σ = 29011070304. Its totient is φ = 16117261200.

The previous prime is 22161234197. The next prime is 22161234233. The reversal of 22161234205 is 50243216122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22161234205 - 2³ = 22161234197 is a prime.

It is a super-2 number, since 2×22161234205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 201465711 + ... + 201465820.

It is an arithmetic number, because the mean of its divisors is an integer number (3626383788).

Almost surely, 2^22161234205 is an apocalyptic number.

It is an amenable number.

22161234205 is a deficient number, since it is larger than the sum of its proper divisors (6849836099).

22161234205 is a wasteful number, since it uses less digits than its factorization.

22161234205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402931547.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 22161234205 in words is "twenty-two billion, one hundred sixty-one million, two hundred thirty-four thousand, two hundred five".