1200212233100 has 144 divisors (see below), whose sum is σ = 2814213628800. Its totient is φ = 442806336000.

The previous prime is 1200212233093. The next prime is 1200212233111. The reversal of 1200212233100 is 13322120021.

It is a super-2 number, since 2×1200212233100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38233211 + ... + 38264589.

It is an arithmetic number, because the mean of its divisors is an integer number (19543150200).

Almost surely, 2^{1200212233100} is an apocalyptic number.

1200212233100 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 1200212233100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1407106814400).

1200212233100 is an abundant number, since it is smaller than the sum of its proper divisors (1614001395700).

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

1200212233100 is a wasteful number, since it uses less digits than its factorization.

1200212233100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31944 (or 31937 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1200212233100 its reverse (13322120021), we get a palindrome (1213534353121).

The spelling of 1200212233100 in words is "one trillion, two hundred billion, two hundred twelve million, two hundred thirty-three thousand, one hundred".