11420021212 has 12 divisors (see below), whose sum is σ = 21036881320. Its totient is φ = 5409483696.

The previous prime is 11420021089. The next prime is 11420021237. The reversal of 11420021212 is 21212002411.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75131643 + ... + 75131794.

Almost surely, 2^11420021212 is an apocalyptic number.

It is an amenable number.

11420021212 is a deficient number, since it is larger than the sum of its proper divisors (9616860108).

11420021212 is a wasteful number, since it uses less digits than its factorization.

11420021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150263460 (or 150263458 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11420021212 its reverse (21212002411), we get a palindrome (32632023623).

The spelling of 11420021212 in words is "eleven billion, four hundred twenty million, twenty-one thousand, two hundred twelve".