121041340723 has 2 divisors, whose sum is σ = 121041340724. Its totient is φ = 121041340722.

The previous prime is 121041340699. The next prime is 121041340729. The reversal of 121041340723 is 327043140121.

It is a strong prime.

It is an emirp because it is prime and its reverse (327043140121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121041340723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121041340691 and 121041340700.

It is not a weakly prime, because it can be changed into another prime (121041340729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60520670361 + 60520670362.

It is an arithmetic number, because the mean of its divisors is an integer number (60520670362).

Almost surely, 2^121041340723 is an apocalyptic number.

121041340723 is a deficient number, since it is larger than the sum of its proper divisors (1).

121041340723 is an equidigital number, since it uses as much as digits as its factorization.

121041340723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 121041340723 its reverse (327043140121), we get a palindrome (448084480844).

The spelling of 121041340723 in words is "one hundred twenty-one billion, forty-one million, three hundred forty thousand, seven hundred twenty-three".