1111022212212 has 72 divisors (see below), whose sum is σ = 3106879094592. Its totient is φ = 331931510400.

The previous prime is 1111022212177. The next prime is 1111022212213. The reversal of 1111022212212 is 2122122201111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111022212213) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19729713 + ... + 19785944.

It is an arithmetic number, because the mean of its divisors is an integer number (43151098536).

Almost surely, 2^{1111022212212} is an apocalyptic number.

1111022212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111022212212 is an abundant number, since it is smaller than the sum of its proper divisors (1995856882380).

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

1111022212212 is a wasteful number, since it uses less digits than its factorization.

1111022212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39515749 (or 39515744 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1111022212212 its reverse (2122122201111), we get a palindrome (3233144413323).

The spelling of 1111022212212 in words is "one trillion, one hundred eleven billion, twenty-two million, two hundred twelve thousand, two hundred twelve".