1212222020200 has 24 divisors (see below), whose sum is σ = 2818416197430. Its totient is φ = 484888808000.

The previous prime is 1212222020189. The next prime is 1212222020291. The reversal of 1212222020200 is 20202222121.

It can be written as a sum of positive squares in 3 ways, for example, as 835640969956 + 376581050244 = 914134^2 + 613662^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3030554851 + ... + 3030555250.

Almost surely, 2^{1212222020200} is an apocalyptic number.

1212222020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212222020200 is an abundant number, since it is smaller than the sum of its proper divisors (1606194177230).

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

1212222020200 is a wasteful number, since it uses less digits than its factorization.

1212222020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061110117 (or 6061110108 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1212222020200 its reverse (20202222121), we get a palindrome (1232424242321).

The spelling of 1212222020200 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, twenty thousand, two hundred".