221523998074 has 32 divisors (see below), whose sum is σ = 336931878096. Its totient is φ = 109227540480.

The previous prime is 221523998041. The next prime is 221523998077. The reversal of 221523998074 is 470899325122.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 192383118225 + 29140879849 = 438615^2 + 170707^2 .

It is not an unprimeable number, because it can be changed into a prime (221523998077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21425034 + ... + 21435370.

Almost surely, 2^221523998074 is an apocalyptic number.

221523998074 is a deficient number, since it is larger than the sum of its proper divisors (115407880022).

221523998074 is a wasteful number, since it uses less digits than its factorization.

221523998074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11010.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 221523998074 in words is "two hundred twenty-one billion, five hundred twenty-three million, nine hundred ninety-eight thousand, seventy-four".