221189245087 has 8 divisors (see below), whose sum is σ = 222805336320. Its totient is φ = 219573508440.

The previous prime is 221189245051. The next prime is 221189245091. The reversal of 221189245087 is 780542981122.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221189245087 is a prime.

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 221189245087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221189245027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235418 + ... + 1403080.

It is an arithmetic number, because the mean of its divisors is an integer number (27850667040).

Almost surely, 2^221189245087 is an apocalyptic number.

221189245087 is a deficient number, since it is larger than the sum of its proper divisors (1616091233).

221189245087 is a wasteful number, since it uses less digits than its factorization.

221189245087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177293.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 221189245087 in words is "two hundred twenty-one billion, one hundred eighty-nine million, two hundred forty-five thousand, eighty-seven".