221334154055 has 32 divisors (see below), whose sum is σ = 309395161728. Its totient is φ = 148860518400.

The previous prime is 221334154039. The next prime is 221334154073. The reversal of 221334154055 is 550451433122.

It is not a de Polignac number, because 221334154055 - 2⁴ = 221334154039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 31 ways as a sum of consecutive naturals, for example, 606815 + ... + 900495.

It is an arithmetic number, because the mean of its divisors is an integer number (9668598804).

Almost surely, 2^221334154055 is an apocalyptic number.

221334154055 is a deficient number, since it is larger than the sum of its proper divisors (88061007673).

221334154055 is a wasteful number, since it uses less digits than its factorization.

221334154055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294107.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 221334154055 its reverse (550451433122), we get a palindrome (771785587177).

The spelling of 221334154055 in words is "two hundred twenty-one billion, three hundred thirty-four million, one hundred fifty-four thousand, fifty-five".