11214069521 has 4 divisors (see below), whose sum is σ = 11214390000. Its totient is φ = 11213749044.

The previous prime is 11214069467. The next prime is 11214069523. The reversal of 11214069521 is 12596041211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11214069521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11214069523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100271 + ... + 180228.

It is an arithmetic number, because the mean of its divisors is an integer number (2803597500).

Almost surely, 2^11214069521 is an apocalyptic number.

It is an amenable number.

11214069521 is a deficient number, since it is larger than the sum of its proper divisors (320479).

11214069521 is an equidigital number, since it uses as much as digits as its factorization.

11214069521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320478.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 11214069521 in words is "eleven billion, two hundred fourteen million, sixty-nine thousand, five hundred twenty-one".