1011212112 has 80 divisors (see below), whose sum is σ = 2731932288. Its totient is φ = 321699840.

The previous prime is 1011212093. The next prime is 1011212117. The reversal of 1011212112 is 2112121101.

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 (1011212117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742312 + ... + 743672.

Almost surely, 2^1011212112 is an apocalyptic number.

1011212112 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 1011212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365966144).

1011212112 is an abundant number, since it is smaller than the sum of its proper divisors (1720720176).

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

1011212112 is a wasteful number, since it uses less digits than its factorization.

1011212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2062 counting only the distinct ones).

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

The square root of 1011212112 is about 31799.5615064107. The cubic root of 1011212112 is about 1003.7234890877.

Adding to 1011212112 its reverse (2112121101), we get a palindrome (3123333213).

The spelling of 1011212112 in words is "one billion, eleven million, two hundred twelve thousand, one hundred twelve".