1222100220112 has 40 divisors (see below), whose sum is σ = 2374370530560. Its totient is φ = 609361334400.

The previous prime is 1222100220109. The next prime is 1222100220113. The reversal of 1222100220112 is 2110220012221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100220113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10412089 + ... + 10528807.

It is an arithmetic number, because the mean of its divisors is an integer number (59359263264).

Almost surely, 2^{1222100220112} is an apocalyptic number.

It is an amenable number.

1222100220112 is a deficient number, since it is larger than the sum of its proper divisors (1152270310448).

1222100220112 is a wasteful number, since it uses less digits than its factorization.

1222100220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118531 (or 118525 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222100220112 its reverse (2110220012221), we get a palindrome (3332320232333).

The spelling of 1222100220112 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred twenty thousand, one hundred twelve".