121711481 has 2 divisors, whose sum is σ = 121711482. Its totient is φ = 121711480.

The previous prime is 121711477. The next prime is 121711501. The reversal of 121711481 is 184117121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118613881 + 3097600 = 10891^2 + 1760^2 .

It is an emirp because it is prime and its reverse (184117121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121711481 - 2² = 121711477 is a prime.

It is a super-2 number, since 2×121711481² = 29627369214426722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121711481.

It is not a weakly prime, because it can be changed into another prime (121711451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60855740 + 60855741.

It is an arithmetic number, because the mean of its divisors is an integer number (60855741).

Almost surely, 2^121711481 is an apocalyptic number.

It is an amenable number.

121711481 is a deficient number, since it is larger than the sum of its proper divisors (1).

121711481 is an equidigital number, since it uses as much as digits as its factorization.

121711481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 26.

The square root of 121711481 is about 11032.2926447770. The cubic root of 121711481 is about 495.5762849148.

The spelling of 121711481 in words is "one hundred twenty-one million, seven hundred eleven thousand, four hundred eighty-one".