11132001221 has 8 divisors (see below), whose sum is σ = 12148070688. Its totient is φ = 10116610000.

The previous prime is 11132001197. The next prime is 11132001269. The reversal of 11132001221 is 12210023111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11132001221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11132001196 and 11132001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11132001271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134930 + ... + 201171.

It is an arithmetic number, because the mean of its divisors is an integer number (1518508836).

Almost surely, 2^11132001221 is an apocalyptic number.

11132001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11132001221 is a deficient number, since it is larger than the sum of its proper divisors (1016069467).

11132001221 is a wasteful number, since it uses less digits than its factorization.

11132001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339123.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11132001221 its reverse (12210023111), we get a palindrome (23342024332).

The spelling of 11132001221 in words is "eleven billion, one hundred thirty-two million, one thousand, two hundred twenty-one".