21222222405141 has 4 divisors (see below), whose sum is σ = 28296296540192. Its totient is φ = 14148148270092.

The previous prime is 21222222405053. The next prime is 21222222405173. The reversal of 21222222405141 is 14150422222212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21222222405141 - 2²¹ = 21222220307989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21222222405099 and 21222222405108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222222405941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3537037067521 + ... + 3537037067526.

It is an arithmetic number, because the mean of its divisors is an integer number (7074074135048).

Almost surely, 2^{21222222405141} is an apocalyptic number.

It is an amenable number.

21222222405141 is a deficient number, since it is larger than the sum of its proper divisors (7074074135051).

21222222405141 is an equidigital number, since it uses as much as digits as its factorization.

21222222405141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074074135050.

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 21222222405141 its reverse (14150422222212), we get a palindrome (35372644627353).

The spelling of 21222222405141 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-two million, four hundred five thousand, one hundred forty-one".