1211200211200 has 108 divisors (see below), whose sum is σ = 3426182724160. Its totient is φ = 415268628480.

The previous prime is 1211200211189. The next prime is 1211200211213. The reversal of 1211200211200 is 21120021121.

It is a super-2 number, since 2×1211200211200² (a number of 25 digits) contains 22 as substring.

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, 13473060 + ... + 13562659.

Almost surely, 2^{1211200211200} is an apocalyptic number.

1211200211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211200211200 is an abundant number, since it is smaller than the sum of its proper divisors (2214982512960).

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

1211200211200 is an equidigital number, since it uses as much as digits as its factorization.

1211200211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27035752 (or 27035733 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211200211200 its reverse (21120021121), we get a palindrome (1232320232321).

The spelling of 1211200211200 in words is "one trillion, two hundred eleven billion, two hundred million, two hundred eleven thousand, two hundred".