221200613455 has 8 divisors (see below), whose sum is σ = 265515089904. Its totient is φ = 176910921600.

The previous prime is 221200613441. The next prime is 221200613467. The reversal of 221200613455 is 554316002122.

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

It is not a de Polignac number, because 221200613455 - 2⁵ = 221200613423 is a prime.

It is a super-2 number, since 2×221200613455² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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, 6176506 + ... + 6212215.

It is an arithmetic number, because the mean of its divisors is an integer number (33189386238).

Almost surely, 2^221200613455 is an apocalyptic number.

221200613455 is a deficient number, since it is larger than the sum of its proper divisors (44314476449).

221200613455 is a wasteful number, since it uses less digits than its factorization.

221200613455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12392297.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 221200613455 its reverse (554316002122), we get a palindrome (775516615577).

The spelling of 221200613455 in words is "two hundred twenty-one billion, two hundred million, six hundred thirteen thousand, four hundred fifty-five".