10111212111157 has 2 divisors, whose sum is σ = 10111212111158. Its totient is φ = 10111212111156.

The previous prime is 10111212111151. The next prime is 10111212111179. The reversal of 10111212111157 is 75111121211101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8102186516356 + 2009025594801 = 2846434^2 + 1417401^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111212111157 - 2¹⁹ = 10111211586869 is a prime.

It is a super-2 number, since 2×10111212111157² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111212111151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055606055578 + 5055606055579.

It is an arithmetic number, because the mean of its divisors is an integer number (5055606055579).

Almost surely, 2^{10111212111157} is an apocalyptic number.

It is an amenable number.

10111212111157 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111212111157 is an equidigital number, since it uses as much as digits as its factorization.

10111212111157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 25.

Adding to 10111212111157 its reverse (75111121211101), we get a palindrome (85222333322258).

The spelling of 10111212111157 in words is "ten trillion, one hundred eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred fifty-seven".