1021133412 has 96 divisors (see below), whose sum is σ = 2898008960. Its totient is φ = 309018240.

The previous prime is 1021133383. The next prime is 1021133419. The reversal of 1021133412 is 2143311201.

1021133412 is a `hidden beast` number, since 10 + 211 + 33 + 412 = 666.

1021133412 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 (18).

It is not an unprimeable number, because it can be changed into a prime (1021133419) 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, 79683 + ... + 91605.

Almost surely, 2^1021133412 is an apocalyptic number.

1021133412 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 1021133412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1449004480).

1021133412 is an abundant number, since it is smaller than the sum of its proper divisors (1876875548).

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

1021133412 is a wasteful number, since it uses less digits than its factorization.

1021133412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12010 (or 12002 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1021133412 is about 31955.1781719333. The cubic root of 1021133412 is about 1006.9954206475.

Adding to 1021133412 its reverse (2143311201), we get a palindrome (3164444613).

The spelling of 1021133412 in words is "one billion, twenty-one million, one hundred thirty-three thousand, four hundred twelve".