1122020120200 has 144 divisors (see below), whose sum is σ = 3039573150180. Its totient is φ = 384062999040.

The previous prime is 1122020120171. The next prime is 1122020120233. The reversal of 1122020120200 is 20210202211.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8822093476 + 1113198026724 = 93926^2 + 1055082^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5914014 + ... + 6100786.

Almost surely, 2^{1122020120200} is an apocalyptic number.

1122020120200 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 1122020120200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519786575090).

1122020120200 is an abundant number, since it is smaller than the sum of its proper divisors (1917553029980).

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

1122020120200 is a wasteful number, since it uses less digits than its factorization.

1122020120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187416 (or 187400 counting only the distinct ones).

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

Adding to 1122020120200 its reverse (20210202211), we get a palindrome (1142230322411).

The spelling of 1122020120200 in words is "one trillion, one hundred twenty-two billion, twenty million, one hundred twenty thousand, two hundred".