11121100020157 has 2 divisors, whose sum is σ = 11121100020158. Its totient is φ = 11121100020156.

The previous prime is 11121100020071. The next prime is 11121100020169. The reversal of 11121100020157 is 75102000112111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9283410703161 + 1837689316996 = 3046869^2 + 1355614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121100020157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121100080157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560550010078 + 5560550010079.

It is an arithmetic number, because the mean of its divisors is an integer number (5560550010079).

Almost surely, 2^{11121100020157} is an apocalyptic number.

It is an amenable number.

11121100020157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121100020157 is an equidigital number, since it uses as much as digits as its factorization.

11121100020157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 22.

Adding to 11121100020157 its reverse (75102000112111), we get a palindrome (86223100132268).

The spelling of 11121100020157 in words is "eleven trillion, one hundred twenty-one billion, one hundred million, twenty thousand, one hundred fifty-seven".