1203421323525 has 12 divisors (see below), whose sum is σ = 1989656588352. Its totient is φ = 641824705840.

The previous prime is 1203421323479. The next prime is 1203421323547. The reversal of 1203421323525 is 5253231243021.

It is not a de Polignac number, because 1203421323525 - 2¹³ = 1203421315333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8022808749 + ... + 8022808898.

It is an arithmetic number, because the mean of its divisors is an integer number (165804715696).

Almost surely, 2^{1203421323525} is an apocalyptic number.

1203421323525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1203421323525 is a deficient number, since it is larger than the sum of its proper divisors (786235264827).

1203421323525 is a wasteful number, since it uses less digits than its factorization.

1203421323525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16045617660 (or 16045617655 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 1203421323525 its reverse (5253231243021), we get a palindrome (6456652566546).

The spelling of 1203421323525 in words is "one trillion, two hundred three billion, four hundred twenty-one million, three hundred twenty-three thousand, five hundred twenty-five".