1212022212200 has 24 divisors (see below), whose sum is σ = 2817951643830. Its totient is φ = 484808884800.

The previous prime is 1212022212161. The next prime is 1212022212253. The reversal of 1212022212200 is 22122202121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 999396091204 + 212626120996 = 999698^2 + 461114^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3030055331 + ... + 3030055730.

Almost surely, 2^{1212022212200} is an apocalyptic number.

1212022212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212022212200 is an abundant number, since it is smaller than the sum of its proper divisors (1605929431630).

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

1212022212200 is a wasteful number, since it uses less digits than its factorization.

1212022212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060111077 (or 6060111068 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1212022212200 its reverse (22122202121), we get a palindrome (1234144414321).

The spelling of 1212022212200 in words is "one trillion, two hundred twelve billion, twenty-two million, two hundred twelve thousand, two hundred".