1101212110157 has 2 divisors, whose sum is σ = 1101212110158. Its totient is φ = 1101212110156.

The previous prime is 1101212110139. The next prime is 1101212110247. The reversal of 1101212110157 is 7510112121011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 905972734276 + 195239375881 = 951826^2 + 441859^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101212110157 - 2¹⁰ = 1101212109133 is a prime.

It is a super-2 number, since 2×1101212110157² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101212110357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550606055078 + 550606055079.

It is an arithmetic number, because the mean of its divisors is an integer number (550606055079).

Almost surely, 2^{1101212110157} is an apocalyptic number.

It is an amenable number.

1101212110157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101212110157 is an equidigital number, since it uses as much as digits as its factorization.

1101212110157 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 23.

Adding to 1101212110157 its reverse (7510112121011), we get a palindrome (8611324231168).

The spelling of 1101212110157 in words is "one trillion, one hundred one billion, two hundred twelve million, one hundred ten thousand, one hundred fifty-seven".