22097271 has 16 divisors (see below), whose sum is σ = 33737984. Its totient is φ = 12602304.

The previous prime is 22097267. The next prime is 22097291. The reversal of 22097271 is 17279022.

It is a happy number.

It is not a de Polignac number, because 22097271 - 2² = 22097267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22097291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19116 + ... + 20238.

It is an arithmetic number, because the mean of its divisors is an integer number (2108624).

Almost surely, 2^22097271 is an apocalyptic number.

22097271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22097271 is a deficient number, since it is larger than the sum of its proper divisors (11640713).

22097271 is a wasteful number, since it uses less digits than its factorization.

22097271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 22097271 is about 4700.7734469978. The cubic root of 22097271 is about 280.6162913321.

The spelling of 22097271 in words is "twenty-two million, ninety-seven thousand, two hundred seventy-one".