1222220120022 has 144 divisors (see below), whose sum is σ = 3052068793488. Its totient is φ = 350515745280.

The previous prime is 1222220119979. The next prime is 1222220120057. The reversal of 1222220120022 is 2200210222221.

1222220120022 is a `hidden beast` number, since 1 + 222 + 220 + 1 + 200 + 22 = 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 = 1222220119977 and 1222220120004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 73828498 + ... + 73845050.

It is an arithmetic number, because the mean of its divisors is an integer number (21194922177).

Almost surely, 2^{1222220120022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222220120022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526034396744).

1222220120022 is an abundant number, since it is smaller than the sum of its proper divisors (1829848673466).

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

1222220120022 is a wasteful number, since it uses less digits than its factorization.

1222220120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17643 (or 17621 counting only the distinct ones).

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

Adding to 1222220120022 its reverse (2200210222221), we get a palindrome (3422430342243).

The spelling of 1222220120022 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twenty thousand, twenty-two".