221083625145 has 32 divisors (see below), whose sum is σ = 355446662400. Its totient is φ = 117341569280.

The previous prime is 221083625137. The next prime is 221083625153. The reversal of 221083625145 is 541526380122.

It is an interprime number because it is at equal distance from previous prime (221083625137) and next prime (221083625153).

It is not a de Polignac number, because 221083625145 - 2³ = 221083625137 is a prime.

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, 2809435 + ... + 2887055.

It is an arithmetic number, because the mean of its divisors is an integer number (11107708200).

Almost surely, 2^221083625145 is an apocalyptic number.

It is an amenable number.

221083625145 is a deficient number, since it is larger than the sum of its proper divisors (134363037255).

221083625145 is a wasteful number, since it uses less digits than its factorization.

221083625145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78545.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 221083625145 in words is "two hundred twenty-one billion, eighty-three million, six hundred twenty-five thousand, one hundred forty-five".