22120325554 has 4 divisors (see below), whose sum is σ = 33180488334. Its totient is φ = 11060162776.

The previous prime is 22120325543. The next prime is 22120325599. The reversal of 22120325554 is 45552302122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45552302122 = 2 ⋅22776151061.

It can be written as a sum of positive squares in only one way, i.e., 22086418225 + 33907329 = 148615^2 + 5823^2 .

It is a super-2 number, since 2×22120325554² (a number of 21 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 5530081387 + ... + 5530081390.

Almost surely, 2^22120325554 is an apocalyptic number.

22120325554 is a deficient number, since it is larger than the sum of its proper divisors (11060162780).

22120325554 is a wasteful number, since it uses less digits than its factorization.

22120325554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11060162779.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 22120325554 its reverse (45552302122), we get a palindrome (67672627676).

The spelling of 22120325554 in words is "twenty-two billion, one hundred twenty million, three hundred twenty-five thousand, five hundred fifty-four".