1012220112 has 20 divisors (see below), whose sum is σ = 2614902080. Its totient is φ = 337406688.

The previous prime is 1012220047. The next prime is 1012220113. The reversal of 1012220112 is 2110222101.

It is a super-3 number, since 3×1012220112³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012220113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10543912 + ... + 10544007.

It is an arithmetic number, because the mean of its divisors is an integer number (130745104).

Almost surely, 2^1012220112 is an apocalyptic number.

1012220112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012220112 is an abundant number, since it is smaller than the sum of its proper divisors (1602681968).

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

1012220112 is a wasteful number, since it uses less digits than its factorization.

1012220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21087930 (or 21087924 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1012220112 is about 31815.4068337967. The cubic root of 1012220112 is about 1004.0568900532.

Adding to 1012220112 its reverse (2110222101), we get a palindrome (3122442213).

The spelling of 1012220112 in words is "one billion, twelve million, two hundred twenty thousand, one hundred twelve".