12021103220432 has 20 divisors (see below), whose sum is σ = 23298496499076. Its totient is φ = 6008587994880.

The previous prime is 12021103220431. The next prime is 12021103220447. The reversal of 12021103220432 is 23402230112021.

It can be written as a sum of positive squares in 2 ways, for example, as 8638755558976 + 3382347661456 = 2939176^2 + 1839116^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12021103220398 and 12021103220407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021103220431) 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, 122675453 + ... + 122773404.

Almost surely, 2^{12021103220432} is an apocalyptic number.

It is an amenable number.

12021103220432 is a deficient number, since it is larger than the sum of its proper divisors (11277393278644).

12021103220432 is a wasteful number, since it uses less digits than its factorization.

12021103220432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245451926 (or 245451920 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12021103220432 its reverse (23402230112021), we get a palindrome (35423333332453).

The spelling of 12021103220432 in words is "twelve trillion, twenty-one billion, one hundred three million, two hundred twenty thousand, four hundred thirty-two".