221255660633330 has 64 divisors (see below), whose sum is σ = 399708756511488. Its totient is φ = 88181016042240.

The previous prime is 221255660633323. The next prime is 221255660633351. The reversal of 221255660633330 is 33336066552122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25587559067 + ... + 25587567713.

It is an arithmetic number, because the mean of its divisors is an integer number (6245449320492).

Almost surely, 2^{221255660633330} is an apocalyptic number.

221255660633330 is a deficient number, since it is larger than the sum of its proper divisors (178453095878158).

221255660633330 is a wasteful number, since it uses less digits than its factorization.

221255660633330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17091.

The product of its (nonzero) digits is 3499200, while the sum is 47.

The spelling of 221255660633330 in words is "two hundred twenty-one trillion, two hundred fifty-five billion, six hundred sixty million, six hundred thirty-three thousand, three hundred thirty".