221222110120 has 32 divisors (see below), whose sum is σ = 542999725920. Its totient is φ = 80444403520.

The previous prime is 221222110093. The next prime is 221222110163. The reversal of 221222110120 is 21011222122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221222110094 and 221222110103.

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, 251388322 + ... + 251389201.

It is an arithmetic number, because the mean of its divisors is an integer number (16968741435).

Almost surely, 2^221222110120 is an apocalyptic number.

221222110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222110120 is an abundant number, since it is smaller than the sum of its proper divisors (321777615800).

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

221222110120 is a wasteful number, since it uses less digits than its factorization.

221222110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502777545 (or 502777541 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221222110120 its reverse (21011222122), we get a palindrome (242233332242).

The spelling of 221222110120 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred ten thousand, one hundred twenty".