21401222344411 has 8 divisors (see below), whose sum is σ = 26339965962464. Its totient is φ = 16932835261440.

The previous prime is 21401222344399. The next prime is 21401222344421. The reversal of 21401222344411 is 11444322210412.

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

It is not a de Polignac number, because 21401222344411 - 2⁹ = 21401222343899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21401222344421) 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, 117589133670 + ... + 117589133851.

It is an arithmetic number, because the mean of its divisors is an integer number (3292495745308).

Almost surely, 2^{21401222344411} is an apocalyptic number.

21401222344411 is a deficient number, since it is larger than the sum of its proper divisors (4938743618053).

21401222344411 is a wasteful number, since it uses less digits than its factorization.

21401222344411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235178267541.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 21401222344411 its reverse (11444322210412), we get a palindrome (32845544554823).

The spelling of 21401222344411 in words is "twenty-one trillion, four hundred one billion, two hundred twenty-two million, three hundred forty-four thousand, four hundred eleven".