221431350245055 has 32 divisors (see below), whose sum is σ = 372939737587200. Its totient is φ = 111880285287552.

The previous prime is 221431350245033. The next prime is 221431350245081. The reversal of 221431350245055 is 550542053134122.

221431350245055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221431350245055 - 2⁵ = 221431350245023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221431350244998 and 221431350245016.

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, 37197406 + ... + 42737684.

It is an arithmetic number, because the mean of its divisors is an integer number (11654366799600).

Almost surely, 2^{221431350245055} is an apocalyptic number.

221431350245055 is a deficient number, since it is larger than the sum of its proper divisors (151508387342145).

221431350245055 is a wasteful number, since it uses less digits than its factorization.

221431350245055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5680543.

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 221431350245055 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, three hundred fifty million, two hundred forty-five thousand, fifty-five".