1222203020220 has 864 divisors, whose sum is σ = 4817926608768. Its totient is φ = 248377135104.

The previous prime is 1222203020191. The next prime is 1222203020239. The reversal of 1222203020220 is 220203022221.

1222203020220 is a `hidden beast` number, since 1 + 222 + 203 + 0 + 20 + 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 = 1222203020193 and 1222203020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 436967862 + ... + 436970658.

Almost surely, 2^{1222203020220} is an apocalyptic number.

1222203020220 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 1222203020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2408963304384).

1222203020220 is an abundant number, since it is smaller than the sum of its proper divisors (3595723588548).

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

1222203020220 is a wasteful number, since it uses less digits than its factorization.

1222203020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979 (or 2967 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 1222203020220 its reverse (220203022221), we get a palindrome (1442406042441).

The spelling of 1222203020220 in words is "one trillion, two hundred twenty-two billion, two hundred three million, twenty thousand, two hundred twenty".