121547122493 has 2 divisors, whose sum is σ = 121547122494. Its totient is φ = 121547122492.

The previous prime is 121547122471. The next prime is 121547122511. The reversal of 121547122493 is 394221745121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76761135364 + 44785987129 = 277058^2 + 211627^2 .

It is a cyclic number.

It is not a de Polignac number, because 121547122493 - 2¹⁶ = 121547056957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121547122493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121547122453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60773561246 + 60773561247.

It is an arithmetic number, because the mean of its divisors is an integer number (60773561247).

Almost surely, 2^121547122493 is an apocalyptic number.

It is an amenable number.

121547122493 is a deficient number, since it is larger than the sum of its proper divisors (1).

121547122493 is an equidigital number, since it uses as much as digits as its factorization.

121547122493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The spelling of 121547122493 in words is "one hundred twenty-one billion, five hundred forty-seven million, one hundred twenty-two thousand, four hundred ninety-three".