221110120212 has 48 divisors (see below), whose sum is σ = 543341890560. Its totient is φ = 69790254048.

The previous prime is 221110120181. The next prime is 221110120219. The reversal of 221110120212 is 212021011122.

It is a junction number, because it is equal to n+sod(n) for n = 221110120191 and 221110120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110120219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235323 + ... + 705405.

It is an arithmetic number, because the mean of its divisors is an integer number (11319622720).

Almost surely, 2^221110120212 is an apocalyptic number.

It is an amenable number.

221110120212 is an abundant number, since it is smaller than the sum of its proper divisors (322231770348).

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

221110120212 is a wasteful number, since it uses less digits than its factorization.

221110120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472172 (or 472170 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221110120212 its reverse (212021011122), we get a palindrome (433131131334).

The spelling of 221110120212 in words is "two hundred twenty-one billion, one hundred ten million, one hundred twenty thousand, two hundred twelve".