1220200022232 has 256 divisors, whose sum is σ = 3684540182400. Its totient is φ = 372639744000.

The previous prime is 1220200022227. The next prime is 1220200022243. The reversal of 1220200022232 is 2322200020221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69395682 + ... + 69413262.

Almost surely, 2^{1220200022232} is an apocalyptic number.

1220200022232 is a gapful number since it is divisible by the number (12) 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 1220200022232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1842270091200).

1220200022232 is an abundant number, since it is smaller than the sum of its proper divisors (2464340160168).

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

1220200022232 is a wasteful number, since it uses less digits than its factorization.

1220200022232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18115 (or 18105 counting only the distinct ones).

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

Adding to 1220200022232 its reverse (2322200020221), we get a palindrome (3542400042453).

The spelling of 1220200022232 in words is "one trillion, two hundred twenty billion, two hundred million, twenty-two thousand, two hundred thirty-two".