20211321313003 has 16 divisors (see below), whose sum is σ = 21035604925440. Its totient is φ = 19406457199584.

The previous prime is 20211321312983. The next prime is 20211321313037. The reversal of 20211321313003 is 30031312311202.

It is a cyclic number.

It is not a de Polignac number, because 20211321313003 - 2²⁹ = 20210784442091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211321316003) 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, 13794801 + ... + 15189442.

It is an arithmetic number, because the mean of its divisors is an integer number (1314725307840).

Almost surely, 2^{20211321313003} is an apocalyptic number.

20211321313003 is a deficient number, since it is larger than the sum of its proper divisors (824283612437).

20211321313003 is a wasteful number, since it uses less digits than its factorization.

20211321313003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28984578.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20211321313003 its reverse (30031312311202), we get a palindrome (50242633624205).

The spelling of 20211321313003 in words is "twenty trillion, two hundred eleven billion, three hundred twenty-one million, three hundred thirteen thousand, three".