121151980049 has 2 divisors, whose sum is σ = 121151980050. Its totient is φ = 121151980048.

The previous prime is 121151980031. The next prime is 121151980093. The reversal of 121151980049 is 940089151121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116581273600 + 4570706449 = 341440^2 + 67607^2 .

It is a cyclic number.

It is not a de Polignac number, because 121151980049 - 2³⁶ = 52432503313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121151979988 and 121151980015.

It is not a weakly prime, because it can be changed into another prime (121151980349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60575990024 + 60575990025.

It is an arithmetic number, because the mean of its divisors is an integer number (60575990025).

Almost surely, 2^121151980049 is an apocalyptic number.

It is an amenable number.

121151980049 is a deficient number, since it is larger than the sum of its proper divisors (1).

121151980049 is an equidigital number, since it uses as much as digits as its factorization.

121151980049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 41.

The spelling of 121151980049 in words is "one hundred twenty-one billion, one hundred fifty-one million, nine hundred eighty thousand, forty-nine".