21223322001 has 40 divisors (see below), whose sum is σ = 36591956544. Its totient is φ = 12007504800.

The previous prime is 21223321963. The next prime is 21223322033. The reversal of 21223322001 is 10022332212.

21223322001 is a `hidden beast` number, since 212 + 233 + 220 + 0 + 1 = 666.

It is not a de Polignac number, because 21223322001 - 2⁹ = 21223321489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21223322051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 128035 + ... + 242568.

Almost surely, 2^21223322001 is an apocalyptic number.

21223322001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21223322001 is a deficient number, since it is larger than the sum of its proper divisors (15368634543).

21223322001 is a wasteful number, since it uses less digits than its factorization.

21223322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370723 (or 370714 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21223322001 its reverse (10022332212), we get a palindrome (31245654213).

The spelling of 21223322001 in words is "twenty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, one".