221110120012 has 24 divisors (see below), whose sum is σ = 388994671296. Its totient is φ = 109969039488.

The previous prime is 221110120001. The next prime is 221110120039. The reversal of 221110120012 is 210021011122.

It is a junction number, because it is equal to n+sod(n) for n = 221110119974 and 221110120001.

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, 3747613 + ... + 3806155.

It is an arithmetic number, because the mean of its divisors is an integer number (16208111304).

Almost surely, 2^221110120012 is an apocalyptic number.

It is an amenable number.

221110120012 is a deficient number, since it is larger than the sum of its proper divisors (167884551284).

221110120012 is a wasteful number, since it uses less digits than its factorization.

221110120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63537 (or 63535 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221110120012 its reverse (210021011122), we get a palindrome (431131131134).

The spelling of 221110120012 in words is "two hundred twenty-one billion, one hundred ten million, one hundred twenty thousand, twelve".