1202643211023 has 16 divisors (see below), whose sum is σ = 1784600185440. Its totient is φ = 800454197952.

The previous prime is 1202643211001. The next prime is 1202643211051. The reversal of 1202643211023 is 3201123462021.

1202643211023 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 643 + 2 + 1 + 10 + 2 + 3 = 666.

It is not a de Polignac number, because 1202643211023 - 2⁵ = 1202643210991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202643210023) 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 15 ways as a sum of consecutive naturals, for example, 36314886 + ... + 36347987.

It is an arithmetic number, because the mean of its divisors is an integer number (111537511590).

Almost surely, 2^{1202643211023} is an apocalyptic number.

1202643211023 is a deficient number, since it is larger than the sum of its proper divisors (581956974417).

1202643211023 is an equidigital number, since it uses as much as digits as its factorization.

1202643211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72663495 (or 72663489 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1202643211023 its reverse (3201123462021), we get a palindrome (4403766673044).

The spelling of 1202643211023 in words is "one trillion, two hundred two billion, six hundred forty-three million, two hundred eleven thousand, twenty-three".