221080193090 has 16 divisors (see below), whose sum is σ = 397994465088. Its totient is φ = 88420940016.

The previous prime is 221080193053. The next prime is 221080193101. The reversal of 221080193090 is 90391080122.

It is a self number, because there is not a number n which added to its sum of digits gives 221080193090.

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, 1308542 + ... + 1467801.

It is an arithmetic number, because the mean of its divisors is an integer number (24874654068).

Almost surely, 2^221080193090 is an apocalyptic number.

221080193090 is a deficient number, since it is larger than the sum of its proper divisors (176914271998).

221080193090 is a wasteful number, since it uses less digits than its factorization.

221080193090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784313.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 221080193090 in words is "two hundred twenty-one billion, eighty million, one hundred ninety-three thousand, ninety".