221254055520747 has 8 divisors (see below), whose sum is σ = 295411191968256. Its totient is φ = 147299811376872.

The previous prime is 221254055520709. The next prime is 221254055520761. The reversal of 221254055520747 is 747025550452122.

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

It is not a de Polignac number, because 221254055520747 - 2¹² = 221254055516651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221254055520747.

It is not an unprimeable number, because it can be changed into a prime (221254055520787) 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, 50723073363 + ... + 50723077724.

It is an arithmetic number, because the mean of its divisors is an integer number (36926398996032).

Almost surely, 2^{221254055520747} is an apocalyptic number.

221254055520747 is a deficient number, since it is larger than the sum of its proper divisors (74157136447509).

221254055520747 is a wasteful number, since it uses less digits than its factorization.

221254055520747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101446151817.

The product of its (nonzero) digits is 7840000, while the sum is 51.

The spelling of 221254055520747 in words is "two hundred twenty-one trillion, two hundred fifty-four billion, fifty-five million, five hundred twenty thousand, seven hundred forty-seven".