1012211112 has 64 divisors (see below), whose sum is σ = 2774592000. Its totient is φ = 305173440.

The previous prime is 1012211107. The next prime is 1012211131. The reversal of 1012211112 is 2111122101.

1012211112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42903 + ... + 62169.

It is an arithmetic number, because the mean of its divisors is an integer number (43353000).

Almost surely, 2^1012211112 is an apocalyptic number.

1012211112 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 1012211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1387296000).

1012211112 is an abundant number, since it is smaller than the sum of its proper divisors (1762380888).

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

1012211112 is a wasteful number, since it uses less digits than its factorization.

1012211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19486 (or 19482 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1012211112 is about 31815.2653925753. The cubic root of 1012211112 is about 1004.0539142384.

Adding to 1012211112 its reverse (2111122101), we get a palindrome (3123333213).

The spelling of 1012211112 in words is "one billion, twelve million, two hundred eleven thousand, one hundred twelve".