222122220000 has 120 divisors (see below), whose sum is σ = 728605502856. Its totient is φ = 59232576000.

The previous prime is 222122219981. The next prime is 222122220049. The reversal of 222122220000 is 22221222.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1791019 + ... + 1911018.

Almost surely, 2^222122220000 is an apocalyptic number.

222122220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222122220000 is an abundant number, since it is smaller than the sum of its proper divisors (506483282856).

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

222122220000 is an equidigital number, since it uses as much as digits as its factorization.

222122220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702070 (or 3702047 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 222122220000 its reverse (22221222), we get a palindrome (222144441222).

The spelling of 222122220000 in words is "two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty thousand".