12402133120421 has 16 divisors (see below), whose sum is σ = 13536621633600. Its totient is φ = 11268815846400.

The previous prime is 12402133120387. The next prime is 12402133120441.

It is a happy number.

12402133120421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12402133120421 - 2¹⁴ = 12402133104037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402133120441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518710415 + ... + 518734323.

It is an arithmetic number, because the mean of its divisors is an integer number (846038852100).

Almost surely, 2^{12402133120421} is an apocalyptic number.

12402133120421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12402133120421 is a deficient number, since it is larger than the sum of its proper divisors (1134488513179).

12402133120421 is a wasteful number, since it uses less digits than its factorization.

12402133120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46420.

The product of its (nonzero) digits is 2304, while the sum is 26.

It can be divided in two parts, 1240213 and 3120421, that added together give a palindrome (4360634).

The spelling of 12402133120421 in words is "twelve trillion, four hundred two billion, one hundred thirty-three million, one hundred twenty thousand, four hundred twenty-one".