21332200123 has 8 divisors (see below), whose sum is σ = 22983430400. Its totient is φ = 19682440128.

The previous prime is 21332200093. The next prime is 21332200207. The reversal of 21332200123 is 32100223312.

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

It is not a de Polignac number, because 21332200123 - 2¹⁷ = 21332069051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21332200123.

It is not an unprimeable number, because it can be changed into a prime (21332200223) 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, 337338 + ... + 395551.

It is an arithmetic number, because the mean of its divisors is an integer number (2872928800).

Almost surely, 2^21332200123 is an apocalyptic number.

21332200123 is a deficient number, since it is larger than the sum of its proper divisors (1651230277).

21332200123 is a wasteful number, since it uses less digits than its factorization.

21332200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735141.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21332200123 its reverse (32100223312), we get a palindrome (53432423435).

It can be divided in two parts, 2133 and 2200123, that added together give a square (2202256 = 1484²).

The spelling of 21332200123 in words is "twenty-one billion, three hundred thirty-two million, two hundred thousand, one hundred twenty-three".