21402223344011 has 8 divisors (see below), whose sum is σ = 21414211932960. Its totient is φ = 21390235192768.

The previous prime is 21402223343959. The next prime is 21402223344023. The reversal of 21402223344011 is 11044332220412.

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 21402223344011 - 2¹⁰ = 21402223342987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21402223344041) 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, 175198925 + ... + 175321041.

It is an arithmetic number, because the mean of its divisors is an integer number (2676776491620).

Almost surely, 2^{21402223344011} is an apocalyptic number.

21402223344011 is a deficient number, since it is larger than the sum of its proper divisors (11988588949).

21402223344011 is a wasteful number, since it uses less digits than its factorization.

21402223344011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218853.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 21402223344011 its reverse (11044332220412), we get a palindrome (32446555564423).

The spelling of 21402223344011 in words is "twenty-one trillion, four hundred two billion, two hundred twenty-three million, three hundred forty-four thousand, eleven".