221435301055 has 8 divisors (see below), whose sum is σ = 277275507552. Its totient is φ = 169446143328.

The previous prime is 221435301053. The next prime is 221435301071. The reversal of 221435301055 is 550103534122.

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

It is a cyclic number.

It is not a de Polignac number, because 221435301055 - 2¹ = 221435301053 is a prime.

It is a super-2 number, since 2×221435301055² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221435301053) 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, 962762064 + ... + 962762293.

It is an arithmetic number, because the mean of its divisors is an integer number (34659438444).

Almost surely, 2^221435301055 is an apocalyptic number.

221435301055 is a deficient number, since it is larger than the sum of its proper divisors (55840206497).

221435301055 is a wasteful number, since it uses less digits than its factorization.

221435301055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925524385.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 221435301055 its reverse (550103534122), we get a palindrome (771538835177).

The spelling of 221435301055 in words is "two hundred twenty-one billion, four hundred thirty-five million, three hundred one thousand, fifty-five".