22085901 has 12 divisors (see below), whose sum is σ = 31945212. Its totient is φ = 14703936.

The previous prime is 22085897. The next prime is 22085933. The reversal of 22085901 is 10958022.

It can be written as a sum of positive squares in 2 ways, for example, as 12068676 + 10017225 = 3474^2 + 3165^2 .

It is not a de Polignac number, because 22085901 - 2² = 22085897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22085971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8755 + ... + 10991.

It is an arithmetic number, because the mean of its divisors is an integer number (2662101).

Almost surely, 2^22085901 is an apocalyptic number.

It is an amenable number.

22085901 is a deficient number, since it is larger than the sum of its proper divisors (9859311).

22085901 is a wasteful number, since it uses less digits than its factorization.

22085901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340 (or 3337 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 22085901 is about 4699.5639159394. The cubic root of 22085901 is about 280.5681533422.

It can be divided in two parts, 2 and 2085901, that added together give a triangular number (2085903 = T₂₀₄₂).

The spelling of 22085901 in words is "twenty-two million, eighty-five thousand, nine hundred one".