21101033201323 has 4 divisors (see below), whose sum is σ = 21101185123408. Its totient is φ = 21100881279240.

The previous prime is 21101033201317. The next prime is 21101033201383. The reversal of 21101033201323 is 32310233010112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21101033201323 - 2⁵ = 21101033201291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21101033201294 and 21101033201303.

It is not an unprimeable number, because it can be changed into a prime (21101033201383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75752511 + ... + 76030552.

It is an arithmetic number, because the mean of its divisors is an integer number (5275296280852).

Almost surely, 2^{21101033201323} is an apocalyptic number.

21101033201323 is a deficient number, since it is larger than the sum of its proper divisors (151922085).

21101033201323 is a wasteful number, since it uses less digits than its factorization.

21101033201323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151922084.

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

Adding to 21101033201323 its reverse (32310233010112), we get a palindrome (53411266211435).

The spelling of 21101033201323 in words is "twenty-one trillion, one hundred one billion, thirty-three million, two hundred one thousand, three hundred twenty-three".