222100221018 has 32 divisors (see below), whose sum is σ = 478517308416. Its totient is φ = 68317443648.

The previous prime is 222100220987. The next prime is 222100221047. The reversal of 222100221018 is 810122001222.

It is a junction number, because it is equal to n+sod(n) for n = 222100220985 and 222100221003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183930 + ... + 691397.

It is an arithmetic number, because the mean of its divisors is an integer number (14953665888).

Almost surely, 2^222100221018 is an apocalyptic number.

222100221018 is an abundant number, since it is smaller than the sum of its proper divisors (256417087398).

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

222100221018 is a wasteful number, since it uses less digits than its factorization.

222100221018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878598.

The product of its (nonzero) digits is 256, while the sum is 21.

The spelling of 222100221018 in words is "two hundred twenty-two billion, one hundred million, two hundred twenty-one thousand, eighteen".