101581222 has 16 divisors (see below), whose sum is σ = 165089232. Its totient is φ = 46690560.

The previous prime is 101581187. The next prime is 101581261. The reversal of 101581222 is 222185101.

It is a junction number, because it is equal to n+sod(n) for n = 101581193 and 101581202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33279 + ... + 36202.

It is an arithmetic number, because the mean of its divisors is an integer number (10318077).

Almost surely, 2^101581222 is an apocalyptic number.

101581222 is a deficient number, since it is larger than the sum of its proper divisors (63508010).

101581222 is a wasteful number, since it uses less digits than its factorization.

101581222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69543.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 101581222 is about 10078.7510138906. The cubic root of 101581222 is about 466.5925615890.

The spelling of 101581222 in words is "one hundred one million, five hundred eighty-one thousand, two hundred twenty-two".