221514400055 has 12 divisors (see below), whose sum is σ = 287837647560. Its totient is φ = 163579864032.

The previous prime is 221514400043. The next prime is 221514400117. The reversal of 221514400055 is 550004415122.

It is not a de Polignac number, because 221514400055 - 2¹² = 221514395959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131072765 + ... + 131074454.

It is an arithmetic number, because the mean of its divisors is an integer number (23986470630).

Almost surely, 2^221514400055 is an apocalyptic number.

221514400055 is a deficient number, since it is larger than the sum of its proper divisors (66323247505).

221514400055 is a wasteful number, since it uses less digits than its factorization.

221514400055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262147250 (or 262147237 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 221514400055 its reverse (550004415122), we get a palindrome (771518815177).

The spelling of 221514400055 in words is "two hundred twenty-one billion, five hundred fourteen million, four hundred thousand, fifty-five".