21232122401 has 8 divisors (see below), whose sum is σ = 24266832384. Its totient is φ = 18197799840.

The previous prime is 21232122377. The next prime is 21232122403. The reversal of 21232122401 is 10422123212.

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 21232122401 - 2¹⁰ = 21232121377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232122403) 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, 32021 + ... + 208541.

It is an arithmetic number, because the mean of its divisors is an integer number (3033354048).

Almost surely, 2^21232122401 is an apocalyptic number.

It is an amenable number.

21232122401 is a deficient number, since it is larger than the sum of its proper divisors (3034709983).

21232122401 is a wasteful number, since it uses less digits than its factorization.

21232122401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193711.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21232122401 its reverse (10422123212), we get a palindrome (31654245613).

The spelling of 21232122401 in words is "twenty-one billion, two hundred thirty-two million, one hundred twenty-two thousand, four hundred one".