121042613453 has 2 divisors, whose sum is σ = 121042613454. Its totient is φ = 121042613452.

The previous prime is 121042613449. The next prime is 121042613459. The reversal of 121042613453 is 354316240121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92019402409 + 29023211044 = 303347^2 + 170362^2 .

It is an emirp because it is prime and its reverse (354316240121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121042613453 - 2² = 121042613449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121042613459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60521306726 + 60521306727.

It is an arithmetic number, because the mean of its divisors is an integer number (60521306727).

Almost surely, 2^121042613453 is an apocalyptic number.

It is an amenable number.

121042613453 is a deficient number, since it is larger than the sum of its proper divisors (1).

121042613453 is an equidigital number, since it uses as much as digits as its factorization.

121042613453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 121042613453 its reverse (354316240121), we get a palindrome (475358853574).

The spelling of 121042613453 in words is "one hundred twenty-one billion, forty-two million, six hundred thirteen thousand, four hundred fifty-three".