21022002123233 has 4 divisors (see below), whose sum is σ = 21173239548720. Its totient is φ = 20870764697748.

The previous prime is 21022002123169. The next prime is 21022002123251. The reversal of 21022002123233 is 33232120022012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21022002123233 - 2⁶ = 21022002123169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21022002123199 and 21022002123208.

It is not an unprimeable number, because it can be changed into a prime (21022002123253) 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, 75618712535 + ... + 75618712812.

It is an arithmetic number, because the mean of its divisors is an integer number (5293309887180).

Almost surely, 2^{21022002123233} is an apocalyptic number.

It is an amenable number.

21022002123233 is a deficient number, since it is larger than the sum of its proper divisors (151237425487).

21022002123233 is a wasteful number, since it uses less digits than its factorization.

21022002123233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151237425486.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21022002123233 its reverse (33232120022012), we get a palindrome (54254122145245).

The spelling of 21022002123233 in words is "twenty-one trillion, twenty-two billion, two million, one hundred twenty-three thousand, two hundred thirty-three".