222122110021 has 4 divisors (see below), whose sum is σ = 253853840032. Its totient is φ = 190390380012.

The previous prime is 222122110013. The next prime is 222122110031. The reversal of 222122110021 is 120011221222.

It is a happy number.

222122110021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222122110021 - 2³ = 222122110013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222122109977 and 222122110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222122110031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15865864995 + ... + 15865865008.

It is an arithmetic number, because the mean of its divisors is an integer number (63463460008).

Almost surely, 2^222122110021 is an apocalyptic number.

It is an amenable number.

222122110021 is a deficient number, since it is larger than the sum of its proper divisors (31731730011).

222122110021 is an equidigital number, since it uses as much as digits as its factorization.

222122110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31731730010.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222122110021 its reverse (120011221222), we get a palindrome (342133331243).

The spelling of 222122110021 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred ten thousand, twenty-one".