21231133001023 has 8 divisors (see below), whose sum is σ = 23163780462336. Its totient is φ = 19298909616600.

The previous prime is 21231133001003. The next prime is 21231133001041. The reversal of 21231133001023 is 32010033113212.

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

It is a cyclic number.

It is not a de Polignac number, because 21231133001023 - 2²⁵ = 21231099446591 is a prime.

It is a super-2 number, since 2×21231133001023² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21231133000985 and 21231133001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231133001003) 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, 105914533 + ... + 106114798.

It is an arithmetic number, because the mean of its divisors is an integer number (2895472557792).

Almost surely, 2^{21231133001023} is an apocalyptic number.

21231133001023 is a deficient number, since it is larger than the sum of its proper divisors (1932647461313).

21231133001023 is a wasteful number, since it uses less digits than its factorization.

21231133001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212038445.

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

Adding to 21231133001023 its reverse (32010033113212), we get a palindrome (53241166114235).

The spelling of 21231133001023 in words is "twenty-one trillion, two hundred thirty-one billion, one hundred thirty-three million, one thousand, twenty-three".