21202001110023 has 8 divisors (see below), whose sum is σ = 28269395622000. Its totient is φ = 14134637002368.

The previous prime is 21202001110021. The next prime is 21202001110039. The reversal of 21202001110023 is 32001110020212.

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

It is not a de Polignac number, because 21202001110023 - 2¹ = 21202001110021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202001109984 and 21202001110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202001110021) 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, 5920908 + ... + 8801201.

It is an arithmetic number, because the mean of its divisors is an integer number (3533674452750).

Almost surely, 2^{21202001110023} is an apocalyptic number.

21202001110023 is a deficient number, since it is larger than the sum of its proper divisors (7067394511977).

21202001110023 is a wasteful number, since it uses less digits than its factorization.

21202001110023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15202161.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21202001110023 its reverse (32001110020212), we get a palindrome (53203111130235).

The spelling of 21202001110023 in words is "twenty-one trillion, two hundred two billion, one million, one hundred ten thousand, twenty-three".