21422310121 has 8 divisors (see below), whose sum is σ = 22320446400. Its totient is φ = 20534802960.

The previous prime is 21422310109. The next prime is 21422310131. The reversal of 21422310121 is 12101322412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21422310121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21422310131) 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, 2653165 + ... + 2661226.

It is an arithmetic number, because the mean of its divisors is an integer number (2790055800).

Almost surely, 2^21422310121 is an apocalyptic number.

It is an amenable number.

21422310121 is a deficient number, since it is larger than the sum of its proper divisors (898136279).

21422310121 is a wasteful number, since it uses less digits than its factorization.

21422310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314559.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21422310121 its reverse (12101322412), we get a palindrome (33523632533).

The spelling of 21422310121 in words is "twenty-one billion, four hundred twenty-two million, three hundred ten thousand, one hundred twenty-one".