121343231153 has 2 divisors, whose sum is σ = 121343231154. Its totient is φ = 121343231152.

The previous prime is 121343231143. The next prime is 121343231161. The reversal of 121343231153 is 351132343121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106776672289 + 14566558864 = 326767^2 + 120692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121343231153 is a prime.

It is not a weakly prime, because it can be changed into another prime (121343231143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60671615576 + 60671615577.

It is an arithmetic number, because the mean of its divisors is an integer number (60671615577).

Almost surely, 2^121343231153 is an apocalyptic number.

It is an amenable number.

121343231153 is a deficient number, since it is larger than the sum of its proper divisors (1).

121343231153 is an equidigital number, since it uses as much as digits as its factorization.

121343231153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

Adding to 121343231153 its reverse (351132343121), we get a palindrome (472475574274).

The spelling of 121343231153 in words is "one hundred twenty-one billion, three hundred forty-three million, two hundred thirty-one thousand, one hundred fifty-three".