221317122 has 32 divisors (see below), whose sum is σ = 492065280. Its totient is φ = 65900160.

The previous prime is 221317121. The next prime is 221317123. The reversal of 221317122 is 221713122.

It is an interprime number because it is at equal distance from previous prime (221317121) and next prime (221317123).

It is not an unprimeable number, because it can be changed into a prime (221317121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43347 + ... + 48182.

It is an arithmetic number, because the mean of its divisors is an integer number (15377040).

Almost surely, 2^221317122 is an apocalyptic number.

221317122 is an abundant number, since it is smaller than the sum of its proper divisors (270748158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221317122 is a wasteful number, since it uses less digits than its factorization.

221317122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91578.

The product of its digits is 336, while the sum is 21.

The square root of 221317122 is about 14876.7308908913. The cubic root of 221317122 is about 604.8834071704.

The spelling of 221317122 in words is "two hundred twenty-one million, three hundred seventeen thousand, one hundred twenty-two".