222211202220 has 144 divisors (see below), whose sum is σ = 789120940608. Its totient is φ = 49552312320.

The previous prime is 222211202201. The next prime is 222211202233. The reversal of 222211202220 is 22202112222.

222211202220 is a `hidden beast` number, since 22 + 221 + 1 + 202 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222211202193 and 222211202202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2099049 + ... + 2202368.

It is an arithmetic number, because the mean of its divisors is an integer number (5480006532).

Almost surely, 2^222211202220 is an apocalyptic number.

222211202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222211202220 is an abundant number, since it is smaller than the sum of its proper divisors (566909738388).

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

222211202220 is a wasteful number, since it uses less digits than its factorization.

222211202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301480 (or 4301475 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222211202220 its reverse (22202112222), we get a palindrome (244413314442).

The spelling of 222211202220 in words is "two hundred twenty-two billion, two hundred eleven million, two hundred two thousand, two hundred twenty".