21222714121 has 8 divisors (see below), whose sum is σ = 24665624640. Its totient is φ = 17882577168.

The previous prime is 21222714089. The next prime is 21222714151. The reversal of 21222714121 is 12141722212.

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 21222714121 - 2⁵ = 21222714089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222714151) 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, 25692946 + ... + 25693771.

It is an arithmetic number, because the mean of its divisors is an integer number (3083203080).

Almost surely, 2^21222714121 is an apocalyptic number.

It is an amenable number.

21222714121 is a deficient number, since it is larger than the sum of its proper divisors (3442910519).

21222714121 is an equidigital number, since it uses as much as digits as its factorization.

21222714121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51386783.

The product of its digits is 896, while the sum is 25.

The spelling of 21222714121 in words is "twenty-one billion, two hundred twenty-two million, seven hundred fourteen thousand, one hundred twenty-one".