1112021121157 has 2 divisors, whose sum is σ = 1112021121158. Its totient is φ = 1112021121156.

The previous prime is 1112021121119. The next prime is 1112021121229. The reversal of 1112021121157 is 7511211202111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1090038314401 + 21982806756 = 1044049^2 + 148266^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112021121157 - 2³⁹ = 562265307269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112021121257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556010560578 + 556010560579.

It is an arithmetic number, because the mean of its divisors is an integer number (556010560579).

Almost surely, 2^{1112021121157} is an apocalyptic number.

It is an amenable number.

1112021121157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112021121157 is an equidigital number, since it uses as much as digits as its factorization.

1112021121157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 25.

Adding to 1112021121157 its reverse (7511211202111), we get a palindrome (8623232323268).

The spelling of 1112021121157 in words is "one trillion, one hundred twelve billion, twenty-one million, one hundred twenty-one thousand, one hundred fifty-seven".