2224197685181 has 4 divisors (see below), whose sum is σ = 2236486070364. Its totient is φ = 2211909300000.

The previous prime is 2224197685153. The next prime is 2224197685211. The reversal of 2224197685181 is 1815867914222.

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 338327192281 + 1885870492900 = 581659^2 + 1373270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2224197685181 - 2²² = 2224193490877 is a prime.

It is a super-2 number, since 2×2224197685181² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2224197685781) 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, 6144192320 + ... + 6144192681.

It is an arithmetic number, because the mean of its divisors is an integer number (559121517591).

Almost surely, 2^{2224197685181} is an apocalyptic number.

It is an amenable number.

2224197685181 is a deficient number, since it is larger than the sum of its proper divisors (12288385183).

2224197685181 is a wasteful number, since it uses less digits than its factorization.

2224197685181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12288385182.

The product of its digits is 3870720, while the sum is 56.

The spelling of 2224197685181 in words is "two trillion, two hundred twenty-four billion, one hundred ninety-seven million, six hundred eighty-five thousand, one hundred eighty-one".