11440421212 has 48 divisors (see below), whose sum is σ = 22274028000. Its totient is φ = 5097231360.

The previous prime is 11440421177. The next prime is 11440421249. The reversal of 11440421212 is 21212404411.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 3750664 + ... + 3753712.

It is an arithmetic number, because the mean of its divisors is an integer number (464042250).

Almost surely, 2^11440421212 is an apocalyptic number.

It is an amenable number.

11440421212 is a deficient number, since it is larger than the sum of its proper divisors (10833606788).

11440421212 is a wasteful number, since it uses less digits than its factorization.

11440421212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726 (or 4724 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 11440421212 its reverse (21212404411), we get a palindrome (32652825623).

The spelling of 11440421212 in words is "eleven billion, four hundred forty million, four hundred twenty-one thousand, two hundred twelve".