1211403242099 has 8 divisors (see below), whose sum is σ = 1241119753440. Its totient is φ = 1181694830400.

The previous prime is 1211403242059. The next prime is 1211403242107. The reversal of 1211403242099 is 9902423041121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211403242099 - 2¹⁶ = 1211403176563 is a prime.

It is a super-3 number, since 3×1211403242099³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211403242039) 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 7 ways as a sum of consecutive naturals, for example, 1721567 + ... + 2320904.

It is an arithmetic number, because the mean of its divisors is an integer number (155139969180).

Almost surely, 2^{1211403242099} is an apocalyptic number.

1211403242099 is a deficient number, since it is larger than the sum of its proper divisors (29716511341).

1211403242099 is an equidigital number, since it uses as much as digits as its factorization.

1211403242099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049821.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 1211403242099 in words is "one trillion, two hundred eleven billion, four hundred three million, two hundred forty-two thousand, ninety-nine".