1200212311212 has 72 divisors (see below), whose sum is σ = 3069235146432. Its totient is φ = 395418240000.

The previous prime is 1200212311187. The next prime is 1200212311237. The reversal of 1200212311212 is 2121132120021.

1200212311212 is a `hidden beast` number, since 1 + 200 + 21 + 231 + 1 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (1200212311187) and next prime (1200212311237).

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 2393662 + ... + 2851322.

Almost surely, 2^{1200212311212} is an apocalyptic number.

1200212311212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200212311212 is an abundant number, since it is smaller than the sum of its proper divisors (1869022835220).

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

1200212311212 is a wasteful number, since it uses less digits than its factorization.

1200212311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458519 (or 458514 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1200212311212 its reverse (2121132120021), we get a palindrome (3321344431233).

The spelling of 1200212311212 in words is "one trillion, two hundred billion, two hundred twelve million, three hundred eleven thousand, two hundred twelve".