222100112021 has 4 divisors (see below), whose sum is σ = 224065599852. Its totient is φ = 220134624192.

The previous prime is 222100112011. The next prime is 222100112027. The reversal of 222100112021 is 120211001222.

222100112021 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.

It can be written as a sum of positive squares in 2 ways, for example, as 8633011396 + 213467100625 = 92914^2 + 462025^2 .

It is a cyclic number.

It is not a de Polignac number, because 222100112021 - 2⁶ = 222100111957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222100111987 and 222100112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100112027) 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, 982743746 + ... + 982743971.

It is an arithmetic number, because the mean of its divisors is an integer number (56016399963).

Almost surely, 2^222100112021 is an apocalyptic number.

It is an amenable number.

222100112021 is a deficient number, since it is larger than the sum of its proper divisors (1965487831).

222100112021 is a wasteful number, since it uses less digits than its factorization.

222100112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965487830.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222100112021 its reverse (120211001222), we get a palindrome (342311113243).

The spelling of 222100112021 in words is "two hundred twenty-two billion, one hundred million, one hundred twelve thousand, twenty-one".