1222001220222 has 48 divisors (see below), whose sum is σ = 2719372780800. Its totient is φ = 396303610176.

The previous prime is 1222001220211. The next prime is 1222001220233. The reversal of 1222001220222 is 2220221002221.

1222001220222 is a `hidden beast` number, since 1 + 2 + 220 + 0 + 1 + 220 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (1222001220211) and next prime (1222001220233).

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 = 1222001220195 and 1222001220204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16846243 + ... + 16918625.

It is an arithmetic number, because the mean of its divisors is an integer number (56653599600).

Almost surely, 2^{1222001220222} is an apocalyptic number.

1222001220222 is an abundant number, since it is smaller than the sum of its proper divisors (1497371560578).

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

1222001220222 is a wasteful number, since it uses less digits than its factorization.

1222001220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97777 (or 97774 counting only the distinct ones).

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

Adding to 1222001220222 its reverse (2220221002221), we get a palindrome (3442222222443).

The spelling of 1222001220222 in words is "one trillion, two hundred twenty-two billion, one million, two hundred twenty thousand, two hundred twenty-two".