21230122233 has 16 divisors (see below), whose sum is σ = 28478241792. Its totient is φ = 14067792000.

The previous prime is 21230122217. The next prime is 21230122237. The reversal of 21230122233 is 33222103212.

It is a happy number.

It is not a de Polignac number, because 21230122233 - 2⁴ = 21230122217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230122237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1137013 + ... + 1155533.

It is an arithmetic number, because the mean of its divisors is an integer number (1779890112).

Almost surely, 2^21230122233 is an apocalyptic number.

It is an amenable number.

21230122233 is a deficient number, since it is larger than the sum of its proper divisors (7248119559).

21230122233 is a wasteful number, since it uses less digits than its factorization.

21230122233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20816.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21230122233 its reverse (33222103212), we get a palindrome (54452225445).

The spelling of 21230122233 in words is "twenty-one billion, two hundred thirty million, one hundred twenty-two thousand, two hundred thirty-three".