11820151 has 16 divisors (see below), whose sum is σ = 14515200. Its totient is φ = 9394560.

The previous prime is 11820121. The next prime is 11820161. The reversal of 11820151 is 15102811.

It is a happy number.

It is not a de Polignac number, because 11820151 - 2¹⁷ = 11689079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11820121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7750 + ... + 9148.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^11820151 is an apocalyptic number.

11820151 is a deficient number, since it is larger than the sum of its proper divisors (2695049).

11820151 is a wasteful number, since it uses less digits than its factorization.

11820151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 11820151 is about 3438.0446477613. The cubic root of 11820151 is about 227.7933325267.

Adding to 11820151 its reverse (15102811), we get a palindrome (26922962).

The spelling of 11820151 in words is "eleven million, eight hundred twenty thousand, one hundred fifty-one".