83121633697229 has 2 divisors, whose sum is σ = 83121633697230. Its totient is φ = 83121633697228.

The previous prime is 83121633697139. The next prime is 83121633697307. The reversal of 83121633697229 is 92279633612138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59720469321604 + 23401164375625 = 7727902^2 + 4837475^2 .

It is a cyclic number.

It is not a de Polignac number, because 83121633697229 - 2²⁰ = 83121632648653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83121633697829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41560816848614 + 41560816848615.

It is an arithmetic number, because the mean of its divisors is an integer number (41560816848615).

Almost surely, 2^{83121633697229} is an apocalyptic number.

It is an amenable number.

83121633697229 is a deficient number, since it is larger than the sum of its proper divisors (1).

83121633697229 is an equidigital number, since it uses as much as digits as its factorization.

83121633697229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 62.

The spelling of 83121633697229 in words is "eighty-three trillion, one hundred twenty-one billion, six hundred thirty-three million, six hundred ninety-seven thousand, two hundred twenty-nine".