221100195380 has 24 divisors (see below), whose sum is σ = 466253141760. Its totient is φ = 88070034080.

The previous prime is 221100195373. The next prime is 221100195443. The reversal of 221100195380 is 83591001122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23122856 + ... + 23132415.

It is an arithmetic number, because the mean of its divisors is an integer number (19427214240).

Almost surely, 2^221100195380 is an apocalyptic number.

221100195380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221100195380 is an abundant number, since it is smaller than the sum of its proper divisors (245152946380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221100195380 is a wasteful number, since it uses less digits than its factorization.

221100195380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46255519 (or 46255517 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 221100195380 in words is "two hundred twenty-one billion, one hundred million, one hundred ninety-five thousand, three hundred eighty".