1212030202331 has 4 divisors (see below), whose sum is σ = 1305263294832. Its totient is φ = 1118797109832.

The previous prime is 1212030202283. The next prime is 1212030202363. The reversal of 1212030202331 is 1332020302121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212030202331 is a prime.

It is a super-2 number, since 2×1212030202331² (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 (1212030202631) 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, 46616546231 + ... + 46616546256.

It is an arithmetic number, because the mean of its divisors is an integer number (326315823708).

Almost surely, 2^{1212030202331} is an apocalyptic number.

1212030202331 is a deficient number, since it is larger than the sum of its proper divisors (93233092501).

1212030202331 is an equidigital number, since it uses as much as digits as its factorization.

1212030202331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93233092500.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1212030202331 its reverse (1332020302121), we get a palindrome (2544050504452).

The spelling of 1212030202331 in words is "one trillion, two hundred twelve billion, thirty million, two hundred two thousand, three hundred thirty-one".