222022211220 has 96 divisors (see below), whose sum is σ = 693304012800. Its totient is φ = 58985788032.

The previous prime is 222022211197. The next prime is 222022211221. The reversal of 222022211220 is 22112220222.

222022211220 is a `hidden beast` number, since 2 + 220 + 2 + 221 + 1 + 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 = 222022211193 and 222022211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222022211221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 618964 + ... + 909483.

It is an arithmetic number, because the mean of its divisors is an integer number (7221916800).

Almost surely, 2^222022211220 is an apocalyptic number.

222022211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222022211220 is an abundant number, since it is smaller than the sum of its proper divisors (471281801580).

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

222022211220 is a wasteful number, since it uses less digits than its factorization.

222022211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528734 (or 1528726 counting only the distinct ones).

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

Adding to 222022211220 its reverse (22112220222), we get a palindrome (244134431442).

The spelling of 222022211220 in words is "two hundred twenty-two billion, twenty-two million, two hundred eleven thousand, two hundred twenty".