1222220201020 has 192 divisors, whose sum is σ = 3297558491136. Its totient is φ = 369855129600.

The previous prime is 1222220200973. The next prime is 1222220201039. The reversal of 1222220201020 is 201020222221.

It is a junction number, because it is equal to n+sod(n) for n = 1222220200985 and 1222220201003.

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, 186566745 + ... + 186573295.

It is an arithmetic number, because the mean of its divisors is an integer number (17174783808).

Almost surely, 2^{1222220201020} is an apocalyptic number.

1222220201020 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 1222220201020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1648779245568).

1222220201020 is an abundant number, since it is smaller than the sum of its proper divisors (2075338290116).

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

1222220201020 is a wasteful number, since it uses less digits than its factorization.

1222220201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11060 (or 11058 counting only the distinct ones).

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

Adding to 1222220201020 its reverse (201020222221), we get a palindrome (1423240423241).

The spelling of 1222220201020 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, two hundred one thousand, twenty".