1212323303101 has 4 divisors (see below), whose sum is σ = 1212619646304. Its totient is φ = 1212026959900.

The previous prime is 1212323303053. The next prime is 1212323303119. The reversal of 1212323303101 is 1013033232121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212323303101 - 2¹¹ = 1212323301053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212323303161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148165465 + ... + 148173646.

It is an arithmetic number, because the mean of its divisors is an integer number (303154911576).

Almost surely, 2^{1212323303101} is an apocalyptic number.

It is an amenable number.

1212323303101 is a deficient number, since it is larger than the sum of its proper divisors (296343203).

1212323303101 is an equidigital number, since it uses as much as digits as its factorization.

1212323303101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296343202.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1212323303101 its reverse (1013033232121), we get a palindrome (2225356535222).

The spelling of 1212323303101 in words is "one trillion, two hundred twelve billion, three hundred twenty-three million, three hundred three thousand, one hundred one".