11552221241 has 4 divisors (see below), whose sum is σ = 12602423184. Its totient is φ = 10502019300.

The previous prime is 11552221231. The next prime is 11552221243. The reversal of 11552221241 is 14212225511.

It is a happy number.

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-11552221241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11552221241.

It is not an unprimeable number, because it can be changed into a prime (11552221243) 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, 525100955 + ... + 525100976.

It is an arithmetic number, because the mean of its divisors is an integer number (3150605796).

Almost surely, 2^11552221241 is an apocalyptic number.

11552221241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11552221241 is a deficient number, since it is larger than the sum of its proper divisors (1050201943).

11552221241 is a wasteful number, since it uses less digits than its factorization.

11552221241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050201942.

The product of its digits is 1600, while the sum is 26.

Adding to 11552221241 its reverse (14212225511), we get a palindrome (25764446752).

The spelling of 11552221241 in words is "eleven billion, five hundred fifty-two million, two hundred twenty-one thousand, two hundred forty-one".