1111251111241 has 2 divisors, whose sum is σ = 1111251111242. Its totient is φ = 1111251111240.

The previous prime is 1111251111221. The next prime is 1111251111263. The reversal of 1111251111241 is 1421111521111.

It is an a-pointer prime, because the next prime (1111251111263) can be obtained adding 1111251111241 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 889249000000 + 222002111241 = 943000^2 + 471171^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111251111241 - 2¹³ = 1111251103049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111251111211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555625555620 + 555625555621.

It is an arithmetic number, because the mean of its divisors is an integer number (555625555621).

Almost surely, 2^{1111251111241} is an apocalyptic number.

It is an amenable number.

1111251111241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111251111241 is an equidigital number, since it uses as much as digits as its factorization.

1111251111241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 22.

Adding to 1111251111241 its reverse (1421111521111), we get a palindrome (2532362632352).

The spelling of 1111251111241 in words is "one trillion, one hundred eleven billion, two hundred fifty-one million, one hundred eleven thousand, two hundred forty-one".