1122020001200 has 120 divisors (see below), whose sum is σ = 3152391948288. Its totient is φ = 375746192640.

The previous prime is 1122020001181. The next prime is 1122020001209. The reversal of 1122020001200 is 21000202211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1122020001209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4539152 + ... + 4779951.

Almost surely, 2^{1122020001200} is an apocalyptic number.

1122020001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122020001200 is an abundant number, since it is smaller than the sum of its proper divisors (2030371947088).

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

1122020001200 is a wasteful number, since it uses less digits than its factorization.

1122020001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9319171 (or 9319160 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1122020001200 its reverse (21000202211), we get a palindrome (1143020203411).

The spelling of 1122020001200 in words is "one trillion, one hundred twenty-two billion, twenty million, one thousand, two hundred".