20111232151 has 2 divisors, whose sum is σ = 20111232152. Its totient is φ = 20111232150.

The previous prime is 20111232149. The next prime is 20111232199. The reversal of 20111232151 is 15123211102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20111232151 - 2¹ = 20111232149 is a prime.

Together with 20111232149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111232551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055616075 + 10055616076.

It is an arithmetic number, because the mean of its divisors is an integer number (10055616076).

Almost surely, 2^20111232151 is an apocalyptic number.

20111232151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111232151 is an equidigital number, since it uses as much as digits as its factorization.

20111232151 is an evil number, because the sum of its binary digits is even.

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

Adding to 20111232151 its reverse (15123211102), we get a palindrome (35234443253).

The spelling of 20111232151 in words is "twenty billion, one hundred eleven million, two hundred thirty-two thousand, one hundred fifty-one".