12021223111232 has 28 divisors (see below), whose sum is σ = 23855529772716. Its totient is φ = 6010380963840.

The previous prime is 12021223111229. The next prime is 12021223111333. The reversal of 12021223111232 is 23211132212021.

It can be written as a sum of positive squares in 2 ways, for example, as 5745877467136 + 6275345644096 = 2397056^2 + 2505064^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12021223111198 and 12021223111207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1915613 + ... + 5264220.

Almost surely, 2^{12021223111232} is an apocalyptic number.

It is an amenable number.

12021223111232 is a deficient number, since it is larger than the sum of its proper divisors (11834306661484).

12021223111232 is an equidigital number, since it uses as much as digits as its factorization.

12021223111232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206006 (or 7205996 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12021223111232 its reverse (23211132212021), we get a palindrome (35232355323253).

The spelling of 12021223111232 in words is "twelve trillion, twenty-one billion, two hundred twenty-three million, one hundred eleven thousand, two hundred thirty-two".