1212222122200 has 48 divisors (see below), whose sum is σ = 2843358225480. Its totient is φ = 480597788160.

The previous prime is 1212222122161. The next prime is 1212222122359. The reversal of 1212222122200 is 22212222121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26796474 + ... + 26841673.

Almost surely, 2^{1212222122200} is an apocalyptic number.

1212222122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212222122200 is an abundant number, since it is smaller than the sum of its proper divisors (1631136103280).

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

1212222122200 is a wasteful number, since it uses less digits than its factorization.

1212222122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53638276 (or 53638267 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1212222122200 its reverse (22212222121), we get a palindrome (1234434344321).

It can be divided in two parts, 121222 and 2122200, that added together give a palindrome (2243422).

The spelling of 1212222122200 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred".