21232222001 has 8 divisors (see below), whose sum is σ = 22161504960. Its totient is φ = 20303450992.

The previous prime is 21232221991. The next prime is 21232222003. The reversal of 21232222001 is 10022223212.

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

It is a cyclic number.

It is not a de Polignac number, because 21232222001 - 2³⁴ = 4052352817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232222003) 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, 41990 + ... + 210303.

It is an arithmetic number, because the mean of its divisors is an integer number (2770188120).

Almost surely, 2^21232222001 is an apocalyptic number.

It is an amenable number.

21232222001 is a deficient number, since it is larger than the sum of its proper divisors (929282959).

21232222001 is a wasteful number, since it uses less digits than its factorization.

21232222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255975.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21232222001 its reverse (10022223212), we get a palindrome (31254445213).

The spelling of 21232222001 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty-two thousand, one".