221222000120 has 32 divisors (see below), whose sum is σ = 542999455920. Its totient is φ = 80444363520.

The previous prime is 221222000119. The next prime is 221222000123. The reversal of 221222000120 is 21000222122.

It is a junction number, because it is equal to n+sod(n) for n = 221222000095 and 221222000104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222000123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251388197 + ... + 251389076.

Almost surely, 2^221222000120 is an apocalyptic number.

221222000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222000120 is an abundant number, since it is smaller than the sum of its proper divisors (321777455800).

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

221222000120 is a wasteful number, since it uses less digits than its factorization.

221222000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502777295 (or 502777291 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221222000120 its reverse (21000222122), we get a palindrome (242222222242).

The spelling of 221222000120 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty", and thus it is an aban number.