1011111612 has 96 divisors (see below), whose sum is σ = 2751350784. Its totient is φ = 283046400.

The previous prime is 1011111571. The next prime is 1011111613. The reversal of 1011111612 is 2161111101.

1011111612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1011111591 and 1011111600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011111613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1109437 + ... + 1110347.

It is an arithmetic number, because the mean of its divisors is an integer number (28659904).

Almost surely, 2^1011111612 is an apocalyptic number.

1011111612 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 1011111612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375675392).

1011111612 is an abundant number, since it is smaller than the sum of its proper divisors (1740239172).

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

1011111612 is a wasteful number, since it uses less digits than its factorization.

1011111612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 15.

The square root of 1011111612 is about 31797.9812566773. The cubic root of 1011111612 is about 1003.6902360734.

Adding to 1011111612 its reverse (2161111101), we get a palindrome (3172222713).

The spelling of 1011111612 in words is "one billion, eleven million, one hundred eleven thousand, six hundred twelve".