20001043213323 has 16 divisors (see below), whose sum is σ = 27747111993120. Its totient is φ = 12799817160704.

The previous prime is 20001043213303. The next prime is 20001043213351. The reversal of 20001043213323 is 32331234010002.

It is a cyclic number.

It is not a de Polignac number, because 20001043213323 - 2⁶ = 20001043213259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20001043213293 and 20001043213302.

It is not an unprimeable number, because it can be changed into a prime (20001043213303) 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, 664427286 + ... + 664457387.

It is an arithmetic number, because the mean of its divisors is an integer number (1734194499570).

Almost surely, 2^{20001043213323} is an apocalyptic number.

20001043213323 is a deficient number, since it is larger than the sum of its proper divisors (7746068779797).

20001043213323 is a wasteful number, since it uses less digits than its factorization.

20001043213323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328884878.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20001043213323 its reverse (32331234010002), we get a palindrome (52332277223325).

The spelling of 20001043213323 in words is "twenty trillion, one billion, forty-three million, two hundred thirteen thousand, three hundred twenty-three".