1122220001200 has 120 divisors (see below), whose sum is σ = 2828732191616. Its totient is φ = 427286016000.

The previous prime is 1122220001179. The next prime is 1122220001237. The reversal of 1122220001200 is 21000222211.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14584 + ... + 1498216.

Almost surely, 2^{1122220001200} is an apocalyptic number.

1122220001200 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 1122220001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1414366095808).

1122220001200 is an abundant number, since it is smaller than the sum of its proper divisors (1706512190416).

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

1122220001200 is a wasteful number, since it uses less digits than its factorization.

1122220001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483743 (or 1483732 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1122220001200 its reverse (21000222211), we get a palindrome (1143220223411).

The spelling of 1122220001200 in words is "one trillion, one hundred twenty-two billion, two hundred twenty million, one thousand, two hundred".