1144212012 has 18 divisors (see below), whose sum is σ = 2892313788. Its totient is φ = 381403992.

The previous prime is 1144211993. The next prime is 1144212019. The reversal of 1144212012 is 2102124411.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1144212012² = 2618442256810176288, which contains 22 as substring.

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 (1144212019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15891798 + ... + 15891869.

Almost surely, 2^1144212012 is an apocalyptic number.

1144212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1144212012 is an abundant number, since it is smaller than the sum of its proper divisors (1748101776).

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

1144212012 is a wasteful number, since it uses less digits than its factorization.

1144212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31783677 (or 31783672 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1144212012 is about 33826.2030384730. The cubic root of 1144212012 is about 1045.9289106889.

Adding to 1144212012 its reverse (2102124411), we get a palindrome (3246336423).

The spelling of 1144212012 in words is "one billion, one hundred forty-four million, two hundred twelve thousand, twelve".