22001021401 has 8 divisors (see below), whose sum is σ = 22336360704. Its totient is φ = 21667355280.

The previous prime is 22001021387. The next prime is 22001021417. The reversal of 22001021401 is 10412010022.

It is a happy number.

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 22001021401 - 2⁹ = 22001020889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22001321401) 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, 391785 + ... + 444406.

It is an arithmetic number, because the mean of its divisors is an integer number (2792045088).

Almost surely, 2^22001021401 is an apocalyptic number.

It is an amenable number.

22001021401 is a deficient number, since it is larger than the sum of its proper divisors (335339303).

22001021401 is an equidigital number, since it uses as much as digits as its factorization.

22001021401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836591.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22001021401 its reverse (10412010022), we get a palindrome (32413031423).

The spelling of 22001021401 in words is "twenty-two billion, one million, twenty-one thousand, four hundred one".