9972192327281 has 4 divisors (see below), whose sum is σ = 10405765906752. Its totient is φ = 9538618747812.

The previous prime is 9972192327277. The next prime is 9972192327301. The reversal of 9972192327281 is 1827232912799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9972192327281 - 2² = 9972192327277 is a prime.

It is a super-2 number, since 2×9972192327281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9972192327211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216786789701 + ... + 216786789746.

It is an arithmetic number, because the mean of its divisors is an integer number (2601441476688).

Almost surely, 2^{9972192327281} is an apocalyptic number.

It is an amenable number.

9972192327281 is a deficient number, since it is larger than the sum of its proper divisors (433573579471).

9972192327281 is a wasteful number, since it uses less digits than its factorization.

9972192327281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433573579470.

The product of its digits is 13716864, while the sum is 62.

The spelling of 9972192327281 in words is "nine trillion, nine hundred seventy-two billion, one hundred ninety-two million, three hundred twenty-seven thousand, two hundred eighty-one".