122003431145 has 4 divisors (see below), whose sum is σ = 146404117380. Its totient is φ = 97602744912.

The previous prime is 122003431139. The next prime is 122003431169. The reversal of 122003431145 is 541134300221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541134300221 = 113 ⋅4788799117.

It can be written as a sum of positive squares in 2 ways, for example, as 49217866201 + 72785564944 = 221851^2 + 269788^2 .

It is a cyclic number.

It is not a de Polignac number, because 122003431145 - 2²⁰ = 122002382569 is a prime.

It is a super-2 number, since 2×122003431145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12200343110 + ... + 12200343119.

It is an arithmetic number, because the mean of its divisors is an integer number (36601029345).

Almost surely, 2^122003431145 is an apocalyptic number.

It is an amenable number.

122003431145 is a deficient number, since it is larger than the sum of its proper divisors (24400686235).

122003431145 is an equidigital number, since it uses as much as digits as its factorization.

122003431145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24400686234.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 122003431145 its reverse (541134300221), we get a palindrome (663137731366).

The spelling of 122003431145 in words is "one hundred twenty-two billion, three million, four hundred thirty-one thousand, one hundred forty-five".