221100102212012 has 12 divisors (see below), whose sum is σ = 387112189605120. Its totient is φ = 110496619467696.

The previous prime is 221100102211969. The next prime is 221100102212039. The reversal of 221100102212012 is 210212201001122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13357900268 + ... + 13357916819.

It is an arithmetic number, because the mean of its divisors is an integer number (32259349133760).

Almost surely, 2^{221100102212012} is an apocalyptic number.

It is an amenable number.

221100102212012 is a deficient number, since it is larger than the sum of its proper divisors (166012087393108).

221100102212012 is a wasteful number, since it uses less digits than its factorization.

221100102212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26715819160 (or 26715819158 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221100102212012 its reverse (210212201001122), we get a palindrome (431312303213134).

The spelling of 221100102212012 in words is "two hundred twenty-one trillion, one hundred billion, one hundred two million, two hundred twelve thousand, twelve".