121099052443 has 2 divisors, whose sum is σ = 121099052444. Its totient is φ = 121099052442.

The previous prime is 121099052423. The next prime is 121099052449. The reversal of 121099052443 is 344250990121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121099052443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121099052396 and 121099052405.

It is not a weakly prime, because it can be changed into another prime (121099052449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60549526221 + 60549526222.

It is an arithmetic number, because the mean of its divisors is an integer number (60549526222).

Almost surely, 2^121099052443 is an apocalyptic number.

121099052443 is a deficient number, since it is larger than the sum of its proper divisors (1).

121099052443 is an equidigital number, since it uses as much as digits as its factorization.

121099052443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 121099052443 in words is "one hundred twenty-one billion, ninety-nine million, fifty-two thousand, four hundred forty-three".