121551554083 has 2 divisors, whose sum is σ = 121551554084. Its totient is φ = 121551554082.

The previous prime is 121551554011. The next prime is 121551554087. The reversal of 121551554083 is 380455155121.

It is a strong prime.

It is an emirp because it is prime and its reverse (380455155121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121551554083 is a prime.

It is not a weakly prime, because it can be changed into another prime (121551554087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60775777041 + 60775777042.

It is an arithmetic number, because the mean of its divisors is an integer number (60775777042).

Almost surely, 2^121551554083 is an apocalyptic number.

121551554083 is a deficient number, since it is larger than the sum of its proper divisors (1).

121551554083 is an equidigital number, since it uses as much as digits as its factorization.

121551554083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120000, while the sum is 40.

The spelling of 121551554083 in words is "one hundred twenty-one billion, five hundred fifty-one million, five hundred fifty-four thousand, eighty-three".