1101212026157 has 2 divisors, whose sum is σ = 1101212026158. Its totient is φ = 1101212026156.

The previous prime is 1101212026139. The next prime is 1101212026169. The reversal of 1101212026157 is 7516202121011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868141291081 + 233070735076 = 931741^2 + 482774^2 .

It is an emirp because it is prime and its reverse (7516202121011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1101212026157 - 2¹⁴ = 1101212009773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101212020157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550606013078 + 550606013079.

It is an arithmetic number, because the mean of its divisors is an integer number (550606013079).

Almost surely, 2^{1101212026157} is an apocalyptic number.

It is an amenable number.

1101212026157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101212026157 is an equidigital number, since it uses as much as digits as its factorization.

1101212026157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 29.

Adding to 1101212026157 its reverse (7516202121011), we get a palindrome (8617414147168).

The spelling of 1101212026157 in words is "one trillion, one hundred one billion, two hundred twelve million, twenty-six thousand, one hundred fifty-seven".