121353231452511 has 64 divisors (see below), whose sum is σ = 169865835549696. Its totient is φ = 76915552665600.

The previous prime is 121353231452507. The next prime is 121353231452513. The reversal of 121353231452511 is 115254132353121.

It is not a de Polignac number, because 121353231452511 - 2² = 121353231452507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121353231452511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121353231452513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26606713671 + ... + 26606718231.

It is an arithmetic number, because the mean of its divisors is an integer number (2654153680464).

Almost surely, 2^{121353231452511} is an apocalyptic number.

121353231452511 is a deficient number, since it is larger than the sum of its proper divisors (48512604097185).

121353231452511 is a wasteful number, since it uses less digits than its factorization.

121353231452511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7552.

The product of its digits is 108000, while the sum is 39.

The spelling of 121353231452511 in words is "one hundred twenty-one trillion, three hundred fifty-three billion, two hundred thirty-one million, four hundred fifty-two thousand, five hundred eleven".