22209820281 has 24 divisors (see below), whose sum is σ = 35943171264. Its totient is φ = 13096697760.

The previous prime is 22209820279. The next prime is 22209820301. The reversal of 22209820281 is 18202890222.

It is a happy number.

It is not a de Polignac number, because 22209820281 - 2¹ = 22209820279 is a prime.

It is a super-2 number, since 2×22209820281² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22209820231) 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, 3027981 + ... + 3035306.

It is an arithmetic number, because the mean of its divisors is an integer number (1497632136).

Almost surely, 2^22209820281 is an apocalyptic number.

It is an amenable number.

22209820281 is a deficient number, since it is larger than the sum of its proper divisors (13733350983).

22209820281 is a wasteful number, since it uses less digits than its factorization.

22209820281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063341 (or 6063338 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 22209820281 in words is "twenty-two billion, two hundred nine million, eight hundred twenty thousand, two hundred eighty-one".