11221320151 has 4 divisors (see below), whose sum is σ = 11524599112. Its totient is φ = 10918041192.

The previous prime is 11221320091. The next prime is 11221320163. The reversal of 11221320151 is 15102312211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11221320151 - 2⁹ = 11221319639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221320191) 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, 151639425 + ... + 151639498.

It is an arithmetic number, because the mean of its divisors is an integer number (2881149778).

Almost surely, 2^11221320151 is an apocalyptic number.

11221320151 is a deficient number, since it is larger than the sum of its proper divisors (303278961).

11221320151 is an equidigital number, since it uses as much as digits as its factorization.

11221320151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303278960.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 11221320151 its reverse (15102312211), we get a palindrome (26323632362).

The spelling of 11221320151 in words is "eleven billion, two hundred twenty-one million, three hundred twenty thousand, one hundred fifty-one".