1220200111212 has 48 divisors (see below), whose sum is σ = 2884115351040. Its totient is φ = 401453627328.

The previous prime is 1220200111121. The next prime is 1220200111223. The reversal of 1220200111212 is 2121110020221.

It is a super-2 number, since 2×1220200111212² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220200111191 and 1220200111200.

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 15 ways as a sum of consecutive naturals, for example, 2713938 + ... + 3131430.

It is an arithmetic number, because the mean of its divisors is an integer number (60085736480).

Almost surely, 2^{1220200111212} is an apocalyptic number.

1220200111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220200111212 is an abundant number, since it is smaller than the sum of its proper divisors (1663915239828).

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

1220200111212 is a wasteful number, since it uses less digits than its factorization.

1220200111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420662 (or 420660 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220200111212 its reverse (2121110020221), we get a palindrome (3341310131433).

Subtracting 1220200111212 from its reverse (2121110020221), we obtain a palindrome (900909909009).

The spelling of 1220200111212 in words is "one trillion, two hundred twenty billion, two hundred million, one hundred eleven thousand, two hundred twelve".