1202312023521 has 8 divisors (see below), whose sum is σ = 1832094512064. Its totient is φ = 687035442000.

The previous prime is 1202312023453. The next prime is 1202312023529. The reversal of 1202312023521 is 1253202132021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1202312023521 - 2¹⁷ = 1202311892449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202312023491 and 1202312023500.

It is not an unprimeable number, because it can be changed into a prime (1202312023529) 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 7 ways as a sum of consecutive naturals, for example, 28626476730 + ... + 28626476771.

It is an arithmetic number, because the mean of its divisors is an integer number (229011814008).

Almost surely, 2^{1202312023521} is an apocalyptic number.

It is an amenable number.

1202312023521 is a deficient number, since it is larger than the sum of its proper divisors (629782488543).

1202312023521 is an equidigital number, since it uses as much as digits as its factorization.

1202312023521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57252953511.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 1202312023521 its reverse (1253202132021), we get a palindrome (2455514155542).

The spelling of 1202312023521 in words is "one trillion, two hundred two billion, three hundred twelve million, twenty-three thousand, five hundred twenty-one".