221210102118 has 16 divisors (see below), whose sum is σ = 442435149936. Its totient is φ = 73734209760.

The previous prime is 221210102053. The next prime is 221210102123. The reversal of 221210102118 is 811201012122.

It is a junction number, because it is equal to n+sod(n) for n = 221210102094 and 221210102103.

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, 425521 + ... + 789612.

It is an arithmetic number, because the mean of its divisors is an integer number (27652196871).

Almost surely, 2^221210102118 is an apocalyptic number.

221210102118 is an abundant number, since it is smaller than the sum of its proper divisors (221225047818).

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

221210102118 is a wasteful number, since it uses less digits than its factorization.

221210102118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245479.

The product of its (nonzero) digits is 128, while the sum is 21.

The spelling of 221210102118 in words is "two hundred twenty-one billion, two hundred ten million, one hundred two thousand, one hundred eighteen".