11111242001 has 2 divisors, whose sum is σ = 11111242002. Its totient is φ = 11111242000.

The previous prime is 11111241989. The next prime is 11111242031. The reversal of 11111242001 is 10024211111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9800802001 + 1310440000 = 98999^2 + 36200^2 .

It is an emirp because it is prime and its reverse (10024211111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11111242001 - 2¹⁰ = 11111240977 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111242031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555621000 + 5555621001.

It is an arithmetic number, because the mean of its divisors is an integer number (5555621001).

Almost surely, 2^11111242001 is an apocalyptic number.

It is an amenable number.

11111242001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111242001 is an equidigital number, since it uses as much as digits as its factorization.

11111242001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11111242001 its reverse (10024211111), we get a palindrome (21135453112).

The spelling of 11111242001 in words is "eleven billion, one hundred eleven million, two hundred forty-two thousand, one".