1112210122212 has 144 divisors (see below), whose sum is σ = 3421721826432. Its totient is φ = 297352719360.

The previous prime is 1112210122193. The next prime is 1112210122213. The reversal of 1112210122212 is 2122210122111.

1112210122212 is a `hidden beast` number, since 111 + 221 + 0 + 122 + 212 = 666.

It is a super-2 number, since 2×1112210122212² (a number of 25 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1112210122213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9214 + ... + 1491477.

It is an arithmetic number, because the mean of its divisors is an integer number (23761957128).

Almost surely, 2^{1112210122212} is an apocalyptic number.

1112210122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1112210122212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1710860913216).

1112210122212 is an abundant number, since it is smaller than the sum of its proper divisors (2309511704220).

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

1112210122212 is a wasteful number, since it uses less digits than its factorization.

1112210122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500898 (or 1500893 counting only the distinct ones).

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

Adding to 1112210122212 its reverse (2122210122111), we get a palindrome (3234420244323).

The spelling of 1112210122212 in words is "one trillion, one hundred twelve billion, two hundred ten million, one hundred twenty-two thousand, two hundred twelve".