1230232202021 has 4 divisors (see below), whose sum is σ = 1234610252844. Its totient is φ = 1225854151200.

The previous prime is 1230232201993. The next prime is 1230232202027. The reversal of 1230232202021 is 1202022320321.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 607797988996 + 622434213025 = 779614^2 + 788945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230232202021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230232201984 and 1230232202002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230232202027) by changing a digit.

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, 2189024990 + ... + 2189025551.

It is an arithmetic number, because the mean of its divisors is an integer number (308652563211).

Almost surely, 2^{1230232202021} is an apocalyptic number.

It is an amenable number.

1230232202021 is a deficient number, since it is larger than the sum of its proper divisors (4378050823).

1230232202021 is an equidigital number, since it uses as much as digits as its factorization.

1230232202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4378050822.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1230232202021 its reverse (1202022320321), we get a palindrome (2432254522342).

The spelling of 1230232202021 in words is "one trillion, two hundred thirty billion, two hundred thirty-two million, two hundred two thousand, twenty-one".