1213022220112 has 20 divisors (see below), whose sum is σ = 2354527150816. Its totient is φ = 605402310240.

The previous prime is 1213022220077. The next prime is 1213022220191. The reversal of 1213022220112 is 2110222203121.

It is a super-3 number, since 3×1213022220112³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213022220112.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 69290964 + ... + 69308467.

Almost surely, 2^{1213022220112} is an apocalyptic number.

It is an amenable number.

1213022220112 is a deficient number, since it is larger than the sum of its proper divisors (1141504930704).

1213022220112 is a wasteful number, since it uses less digits than its factorization.

1213022220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138599986 (or 138599980 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1213022220112 its reverse (2110222203121), we get a palindrome (3323244423233).

The spelling of 1213022220112 in words is "one trillion, two hundred thirteen billion, twenty-two million, two hundred twenty thousand, one hundred twelve".