11914221028 has 24 divisors (see below), whose sum is σ = 21250252800. Its totient is φ = 5843775168.

The previous prime is 11914221017. The next prime is 11914221031. The reversal of 11914221028 is 82012241911.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86548 + ... + 176971.

It is an arithmetic number, because the mean of its divisors is an integer number (885427200).

Almost surely, 2^11914221028 is an apocalyptic number.

It is an amenable number.

11914221028 is a deficient number, since it is larger than the sum of its proper divisors (9336031772).

11914221028 is a wasteful number, since it uses less digits than its factorization.

11914221028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263739 (or 263737 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

Adding to 11914221028 its reverse (82012241911), we get a palindrome (93926462939).

The spelling of 11914221028 in words is "eleven billion, nine hundred fourteen million, two hundred twenty-one thousand, twenty-eight".