1212323120001 has 24 divisors (see below), whose sum is σ = 2001336180480. Its totient is φ = 692741920896.

The previous prime is 1212323119937. The next prime is 1212323120009. The reversal of 1212323120001 is 1000213232121.

1212323120001 is a `hidden beast` number, since 121 + 232 + 312 + 0 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 1212323120001 - 2⁶ = 1212323119937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212323120009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3443896 + ... + 3779558.

It is an arithmetic number, because the mean of its divisors is an integer number (83389007520).

Almost surely, 2^{1212323120001} is an apocalyptic number.

It is an amenable number.

1212323120001 is a deficient number, since it is larger than the sum of its proper divisors (789013060479).

1212323120001 is a wasteful number, since it uses less digits than its factorization.

1212323120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393005 (or 393002 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1212323120001 its reverse (1000213232121), we get a palindrome (2212536352122).

The spelling of 1212323120001 in words is "one trillion, two hundred twelve billion, three hundred twenty-three million, one hundred twenty thousand, one".