121112011211311 has 2 divisors, whose sum is σ = 121112011211312. Its totient is φ = 121112011211310.

The previous prime is 121112011211293. The next prime is 121112011211333. The reversal of 121112011211311 is 113112110211121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121112011211311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121112011211351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556005605655 + 60556005605656.

It is an arithmetic number, because the mean of its divisors is an integer number (60556005605656).

Almost surely, 2^{121112011211311} is an apocalyptic number.

121112011211311 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112011211311 is an equidigital number, since it uses as much as digits as its factorization.

121112011211311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 19.

Adding to 121112011211311 its reverse (113112110211121), we get a palindrome (234224121422432).

The spelling of 121112011211311 in words is "one hundred twenty-one trillion, one hundred twelve billion, eleven million, two hundred eleven thousand, three hundred eleven".