1212021230231 has 8 divisors (see below), whose sum is σ = 1402700881920. Its totient is φ = 1025725018968.

The previous prime is 1212021230227. The next prime is 1212021230237. The reversal of 1212021230231 is 1320321202121.

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 1212021230231 - 2² = 1212021230227 is a prime.

It is a super-2 number, since 2×1212021230231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212021230237) 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, 1095859511 + ... + 1095860616.

It is an arithmetic number, because the mean of its divisors is an integer number (175337610240).

Almost surely, 2^{1212021230231} is an apocalyptic number.

1212021230231 is a deficient number, since it is larger than the sum of its proper divisors (190679651689).

1212021230231 is an equidigital number, since it uses as much as digits as its factorization.

1212021230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191720213.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1212021230231 its reverse (1320321202121), we get a palindrome (2532342432352).

The spelling of 1212021230231 in words is "one trillion, two hundred twelve billion, twenty-one million, two hundred thirty thousand, two hundred thirty-one".