22197419506 has 4 divisors (see below), whose sum is σ = 33296129262. Its totient is φ = 11098709752.

The previous prime is 22197419501. The next prime is 22197419507. The reversal of 22197419506 is 60591479122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60591479122 = 2 ⋅30295739561.

It can be written as a sum of positive squares in only one way, i.e., 20825087481 + 1372332025 = 144309^2 + 37045^2 .

It is not an unprimeable number, because it can be changed into a prime (22197419501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5549354875 + ... + 5549354878.

Almost surely, 2^22197419506 is an apocalyptic number.

22197419506 is a deficient number, since it is larger than the sum of its proper divisors (11098709756).

22197419506 is a wasteful number, since it uses less digits than its factorization.

22197419506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11098709755.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 22197419506 in words is "twenty-two billion, one hundred ninety-seven million, four hundred nineteen thousand, five hundred six".