11431421012 has 48 divisors (see below), whose sum is σ = 22152312000. Its totient is φ = 5118216960.

The previous prime is 11431421011. The next prime is 11431421039. The reversal of 11431421012 is 21012413411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431421011) 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, 1270064 + ... + 1279032.

It is an arithmetic number, because the mean of its divisors is an integer number (461506500).

Almost surely, 2^11431421012 is an apocalyptic number.

It is an amenable number.

11431421012 is a deficient number, since it is larger than the sum of its proper divisors (10720890988).

11431421012 is a wasteful number, since it uses less digits than its factorization.

11431421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9416 (or 9414 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11431421012 its reverse (21012413411), we get a palindrome (32443834423).

The spelling of 11431421012 in words is "eleven billion, four hundred thirty-one million, four hundred twenty-one thousand, twelve".