22197501236249 has 4 divisors (see below), whose sum is σ = 22197514282164. Its totient is φ = 22197488190336.

The previous prime is 22197501236243. The next prime is 22197501236329. The reversal of 22197501236249 is 94263210579122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11872159360000 + 10325341876249 = 3445600^2 + 3213307^2 .

It is a cyclic number.

It is not a de Polignac number, because 22197501236249 - 2⁴ = 22197501236233 is a prime.

It is a super-2 number, since 2×22197501236249² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22197501236249.

It is not an unprimeable number, because it can be changed into a prime (22197501236243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505412 + ... + 7528805.

It is an arithmetic number, because the mean of its divisors is an integer number (5549378570541).

Almost surely, 2^{22197501236249} is an apocalyptic number.

It is an amenable number.

22197501236249 is a deficient number, since it is larger than the sum of its proper divisors (13045915).

22197501236249 is a wasteful number, since it uses less digits than its factorization.

22197501236249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13045914.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 22197501236249 in words is "twenty-two trillion, one hundred ninety-seven billion, five hundred one million, two hundred thirty-six thousand, two hundred forty-nine".