22118481 has 32 divisors (see below), whose sum is σ = 40857600. Its totient is φ = 11489040.

The previous prime is 22118477. The next prime is 22118491. The reversal of 22118481 is 18481122.

It is not a de Polignac number, because 22118481 - 2² = 22118477 is a prime.

It is a super-2 number, since 2×22118481² = 978454403494722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22118401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3241 + ... + 7398.

It is an arithmetic number, because the mean of its divisors is an integer number (1276800).

Almost surely, 2^22118481 is an apocalyptic number.

22118481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22118481 is a deficient number, since it is larger than the sum of its proper divisors (18739119).

22118481 is a wasteful number, since it uses less digits than its factorization.

22118481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666 (or 10660 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 22118481 is about 4703.0289176232. The cubic root of 22118481 is about 280.7060455263.

The spelling of 22118481 in words is "twenty-two million, one hundred eighteen thousand, four hundred eighty-one".