22081275 has 24 divisors (see below), whose sum is σ = 40565360. Its totient is φ = 11776320.

The previous prime is 22081273. The next prime is 22081277. The reversal of 22081275 is 57218022.

It is an interprime number because it is at equal distance from previous prime (22081273) and next prime (22081277).

It is not a de Polignac number, because 22081275 - 2¹ = 22081273 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (22081271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15682 + ... + 17031.

Almost surely, 2^22081275 is an apocalyptic number.

22081275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22081275 is a deficient number, since it is larger than the sum of its proper divisors (18484085).

22081275 is a wasteful number, since it uses less digits than its factorization.

22081275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32732 (or 32721 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 22081275 is about 4699.0717168394. The cubic root of 22081275 is about 280.5485631837.

Adding to 22081275 its reverse (57218022), we get a palindrome (79299297).

The spelling of 22081275 in words is "twenty-two million, eighty-one thousand, two hundred seventy-five".