21223401033 has 32 divisors (see below), whose sum is σ = 30284352000. Its totient is φ = 13181636736.

The previous prime is 21223400969. The next prime is 21223401049. The reversal of 21223401033 is 33010432212.

It is not a de Polignac number, because 21223401033 - 2⁶ = 21223400969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21223401083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1436518 + ... + 1451216.

It is an arithmetic number, because the mean of its divisors is an integer number (946386000).

Almost surely, 2^21223401033 is an apocalyptic number.

It is an amenable number.

21223401033 is a deficient number, since it is larger than the sum of its proper divisors (9060950967).

21223401033 is a wasteful number, since it uses less digits than its factorization.

21223401033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15141.

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

Adding to 21223401033 its reverse (33010432212), we get a palindrome (54233833245).

The spelling of 21223401033 in words is "twenty-one billion, two hundred twenty-three million, four hundred one thousand, thirty-three".