1222201200220 has 192 divisors, whose sum is σ = 3504506342400. Its totient is φ = 345681930240.

The previous prime is 1222201200179. The next prime is 1222201200263. The reversal of 1222201200220 is 220021022221.

It is a junction number, because it is equal to n+sod(n) for n = 1222201200194 and 1222201200203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 663816 + ... + 1698544.

It is an arithmetic number, because the mean of its divisors is an integer number (18252637200).

Almost surely, 2^{1222201200220} is an apocalyptic number.

1222201200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222201200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752253171200).

1222201200220 is an abundant number, since it is smaller than the sum of its proper divisors (2282305142180).

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

1222201200220 is a wasteful number, since it uses less digits than its factorization.

1222201200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034828 (or 1034826 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1222201200220 its reverse (220021022221), we get a palindrome (1442222222441).

The spelling of 1222201200220 in words is "one trillion, two hundred twenty-two billion, two hundred one million, two hundred thousand, two hundred twenty".