111232123001 has 2 divisors, whose sum is σ = 111232123002. Its totient is φ = 111232123000.

The previous prime is 111232122979. The next prime is 111232123043. The reversal of 111232123001 is 100321232111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63163752976 + 48068370025 = 251324^2 + 219245^2 .

It is a cyclic number.

It is not a de Polignac number, because 111232123001 - 2¹⁴ = 111232106617 is a prime.

It is not a weakly prime, because it can be changed into another prime (111232123501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55616061500 + 55616061501.

It is an arithmetic number, because the mean of its divisors is an integer number (55616061501).

Almost surely, 2^111232123001 is an apocalyptic number.

It is an amenable number.

111232123001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111232123001 is an equidigital number, since it uses as much as digits as its factorization.

111232123001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111232123001 its reverse (100321232111), we get a palindrome (211553355112).

The spelling of 111232123001 in words is "one hundred eleven billion, two hundred thirty-two million, one hundred twenty-three thousand, one".