1206425012099 has 4 divisors (see below), whose sum is σ = 1226872893720. Its totient is φ = 1185977130480.

The previous prime is 1206425012071. The next prime is 1206425012141. The reversal of 1206425012099 is 9902105246021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1206425012099 - 2¹² = 1206425008003 is a prime.

It is a super-2 number, since 2×1206425012099² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206425012069) 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 in 3 ways as a sum of consecutive naturals, for example, 10223940722 + ... + 10223940839.

It is an arithmetic number, because the mean of its divisors is an integer number (306718223430).

Almost surely, 2^{1206425012099} is an apocalyptic number.

1206425012099 is a deficient number, since it is larger than the sum of its proper divisors (20447881621).

1206425012099 is an equidigital number, since it uses as much as digits as its factorization.

1206425012099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20447881620.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 1206425012099 in words is "one trillion, two hundred six billion, four hundred twenty-five million, twelve thousand, ninety-nine".