1111213203157 has 2 divisors, whose sum is σ = 1111213203158. Its totient is φ = 1111213203156.

The previous prime is 1111213203077. The next prime is 1111213203179. The reversal of 1111213203157 is 7513023121111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 908388172836 + 202825030321 = 953094^2 + 450361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111213203157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111213203757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555606601578 + 555606601579.

It is an arithmetic number, because the mean of its divisors is an integer number (555606601579).

Almost surely, 2^{1111213203157} is an apocalyptic number.

It is an amenable number.

1111213203157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111213203157 is an equidigital number, since it uses as much as digits as its factorization.

1111213203157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

Adding to 1111213203157 its reverse (7513023121111), we get a palindrome (8624236324268).

The spelling of 1111213203157 in words is "one trillion, one hundred eleven billion, two hundred thirteen million, two hundred three thousand, one hundred fifty-seven".