221375102194 has 8 divisors (see below), whose sum is σ = 332439571548. Its totient is φ = 110561911680.

The previous prime is 221375102171. The next prime is 221375102197. The reversal of 221375102194 is 491201573122.

It can be written as a sum of positive squares in 2 ways, for example, as 183880588969 + 37494513225 = 428813^2 + 193635^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221375102194² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221375102197) 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, 62817507 + ... + 62821030.

Almost surely, 2^221375102194 is an apocalyptic number.

221375102194 is a deficient number, since it is larger than the sum of its proper divisors (111064469354).

221375102194 is a wasteful number, since it uses less digits than its factorization.

221375102194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125639420.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 221375102194 in words is "two hundred twenty-one billion, three hundred seventy-five million, one hundred two thousand, one hundred ninety-four".