121101311 has 2 divisors, whose sum is σ = 121101312. Its totient is φ = 121101310.

The previous prime is 121101293. The next prime is 121101313. The reversal of 121101311 is 113101121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121101311 - 2¹⁸ = 120839167 is a prime.

Together with 121101313, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121101292 and 121101301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121101313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550655 + 60550656.

It is an arithmetic number, because the mean of its divisors is an integer number (60550656).

Almost surely, 2^121101311 is an apocalyptic number.

121101311 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101311 is an equidigital number, since it uses as much as digits as its factorization.

121101311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 121101311 is about 11004.6040819286. The cubic root of 121101311 is about 494.7467479827.

Adding to 121101311 its reverse (113101121), we get a palindrome (234202432).

The spelling of 121101311 in words is "one hundred twenty-one million, one hundred one thousand, three hundred eleven".