12212011121200 has 120 divisors (see below), whose sum is σ = 32323468884336. Its totient is φ = 4396763520000.

The previous prime is 12212011121197. The next prime is 12212011121231. The reversal of 12212011121200 is 212111021221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13295487 + ... + 14184286.

Almost surely, 2^{12212011121200} is an apocalyptic number.

12212011121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212011121200 is an abundant number, since it is smaller than the sum of its proper divisors (20111457763136).

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

12212011121200 is a wasteful number, since it uses less digits than its factorization.

12212011121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27479903 (or 27479892 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12212011121200 its reverse (212111021221), we get a palindrome (12424122142421).

The spelling of 12212011121200 in words is "twelve trillion, two hundred twelve billion, eleven million, one hundred twenty-one thousand, two hundred".