11403421212 has 24 divisors (see below), whose sum is σ = 26745853456. Its totient is φ = 3781444608.

The previous prime is 11403421199. The next prime is 11403421217. The reversal of 11403421212 is 21212430411.

11403421212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403421217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2459563 + ... + 2464194.

Almost surely, 2^11403421212 is an apocalyptic number.

11403421212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11403421212 is an abundant number, since it is smaller than the sum of its proper divisors (15342432244).

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

11403421212 is a wasteful number, since it uses less digits than its factorization.

11403421212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923957 (or 4923955 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11403421212 its reverse (21212430411), we get a palindrome (32615851623).

The spelling of 11403421212 in words is "eleven billion, four hundred three million, four hundred twenty-one thousand, two hundred twelve".