22081147251 has 8 divisors (see below), whose sum is σ = 29457256080. Its totient is φ = 14712901632.

The previous prime is 22081147199. The next prime is 22081147307. The reversal of 22081147251 is 15274118022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22081147251 - 2¹⁵ = 22081114483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22081147351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959246 + ... + 1970483.

It is an arithmetic number, because the mean of its divisors is an integer number (3682157010).

Almost surely, 2^22081147251 is an apocalyptic number.

22081147251 is a deficient number, since it is larger than the sum of its proper divisors (7376108829).

22081147251 is a wasteful number, since it uses less digits than its factorization.

22081147251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931605.

The product of its (nonzero) digits is 8960, while the sum is 33.

The spelling of 22081147251 in words is "twenty-two billion, eighty-one million, one hundred forty-seven thousand, two hundred fifty-one".