1321211023204 has 48 divisors (see below), whose sum is σ = 2343462383808. Its totient is φ = 651704905728.

The previous prime is 1321211023189. The next prime is 1321211023247. The reversal of 1321211023204 is 4023201121231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292754452 + ... + 292758964.

It is an arithmetic number, because the mean of its divisors is an integer number (48822132996).

Almost surely, 2^{1321211023204} is an apocalyptic number.

It is an amenable number.

1321211023204 is a deficient number, since it is larger than the sum of its proper divisors (1022251360604).

1321211023204 is a wasteful number, since it uses less digits than its factorization.

1321211023204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7324 (or 7322 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1321211023204 its reverse (4023201121231), we get a palindrome (5344412144435).

The spelling of 1321211023204 in words is "one trillion, three hundred twenty-one billion, two hundred eleven million, twenty-three thousand, two hundred four".