20211100323 has 16 divisors (see below), whose sum is σ = 27254199840. Its totient is φ = 13321322496.

The previous prime is 20211100319. The next prime is 20211100331. The reversal of 20211100323 is 32300111202.

It is not a de Polignac number, because 20211100323 - 2² = 20211100319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20211100303) 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, 248763 + ... + 319851.

It is an arithmetic number, because the mean of its divisors is an integer number (1703387490).

Almost surely, 2^20211100323 is an apocalyptic number.

20211100323 is a deficient number, since it is larger than the sum of its proper divisors (7043099517).

20211100323 is an equidigital number, since it uses as much as digits as its factorization.

20211100323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72166.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20211100323 its reverse (32300111202), we get a palindrome (52511211525).

The spelling of 20211100323 in words is "twenty billion, two hundred eleven million, one hundred thousand, three hundred twenty-three".