1321023211203 has 8 divisors (see below), whose sum is σ = 1761591497488. Its totient is φ = 880568532864.

The previous prime is 1321023211199. The next prime is 1321023211273. The reversal of 1321023211203 is 3021123201231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321023211203 - 2² = 1321023211199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321023211203.

It is not an unprimeable number, because it can be changed into a prime (1321023211273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28374850 + ... + 28421367.

It is an arithmetic number, because the mean of its divisors is an integer number (220198937186).

Almost surely, 2^{1321023211203} is an apocalyptic number.

1321023211203 is a deficient number, since it is larger than the sum of its proper divisors (440568286285).

1321023211203 is an equidigital number, since it uses as much as digits as its factorization.

1321023211203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56803973.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1321023211203 its reverse (3021123201231), we get a palindrome (4342146412434).

The spelling of 1321023211203 in words is "one trillion, three hundred twenty-one billion, twenty-three million, two hundred eleven thousand, two hundred three".