1221110200112 has 40 divisors (see below), whose sum is σ = 2581057100880. Its totient is φ = 555034138880.

The previous prime is 1221110200109. The next prime is 1221110200187. The reversal of 1221110200112 is 2110020111221.

It is a super-2 number, since 2×1221110200112² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7826738 + ... + 7981230.

It is an arithmetic number, because the mean of its divisors is an integer number (64526427522).

Almost surely, 2^{1221110200112} is an apocalyptic number.

It is an amenable number.

1221110200112 is an abundant number, since it is smaller than the sum of its proper divisors (1359946900768).

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

1221110200112 is a wasteful number, since it uses less digits than its factorization.

1221110200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199421 (or 199415 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1221110200112 its reverse (2110020111221), we get a palindrome (3331130311333).

The spelling of 1221110200112 in words is "one trillion, two hundred twenty-one billion, one hundred ten million, two hundred thousand, one hundred twelve".