221260117490 has 8 divisors (see below), whose sum is σ = 398268211500. Its totient is φ = 88504046992.

The previous prime is 221260117489. The next prime is 221260117511. The reversal of 221260117490 is 94711062122.

It can be written as a sum of positive squares in 2 ways, for example, as 207169715281 + 14090402209 = 455159^2 + 118703^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 221260117490.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11063005865 + ... + 11063005884.

Almost surely, 2^221260117490 is an apocalyptic number.

221260117490 is a deficient number, since it is larger than the sum of its proper divisors (177008094010).

221260117490 is a wasteful number, since it uses less digits than its factorization.

221260117490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22126011756.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 221260117490 in words is "two hundred twenty-one billion, two hundred sixty million, one hundred seventeen thousand, four hundred ninety".