121445387299 has 2 divisors, whose sum is σ = 121445387300. Its totient is φ = 121445387298.

The previous prime is 121445387281. The next prime is 121445387303. The reversal of 121445387299 is 992783544121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121445387299 - 2¹⁵ = 121445354531 is a prime.

It is a super-2 number, since 2×121445387299² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121445387269) 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, 60722693649 + 60722693650.

It is an arithmetic number, because the mean of its divisors is an integer number (60722693650).

Almost surely, 2^121445387299 is an apocalyptic number.

121445387299 is a deficient number, since it is larger than the sum of its proper divisors (1).

121445387299 is an equidigital number, since it uses as much as digits as its factorization.

121445387299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 55.

The spelling of 121445387299 in words is "one hundred twenty-one billion, four hundred forty-five million, three hundred eighty-seven thousand, two hundred ninety-nine".