22210120440421 has 4 divisors (see below), whose sum is σ = 22726634869312. Its totient is φ = 21693606011532.

The previous prime is 22210120440329. The next prime is 22210120440427. The reversal of 22210120440421 is 12404402101222.

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 a cyclic number.

It is not a de Polignac number, because 22210120440421 - 2⁹ = 22210120439909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210120440427) 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, 258257214381 + ... + 258257214466.

It is an arithmetic number, because the mean of its divisors is an integer number (5681658717328).

Almost surely, 2^{22210120440421} is an apocalyptic number.

It is an amenable number.

22210120440421 is a deficient number, since it is larger than the sum of its proper divisors (516514428891).

22210120440421 is an equidigital number, since it uses as much as digits as its factorization.

22210120440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516514428890.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 22210120440421 its reverse (12404402101222), we get a palindrome (34614522541643).

The spelling of 22210120440421 in words is "twenty-two trillion, two hundred ten billion, one hundred twenty million, four hundred forty thousand, four hundred twenty-one".