222101222021 has 4 divisors (see below), whose sum is σ = 253829968032. Its totient is φ = 190372476012.

The previous prime is 222101221999. The next prime is 222101222027. The reversal of 222101222021 is 120222101222.

It is a happy number.

222101222021 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, and also an emirpimes, since its reverse is a distinct semiprime: 120222101222 = 2 ⋅60111050611.

It is a cyclic number.

It is not a de Polignac number, because 222101222021 - 2³⁴ = 204921352837 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 (222101222027) 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, 15864372995 + ... + 15864373008.

It is an arithmetic number, because the mean of its divisors is an integer number (63457492008).

Almost surely, 2^222101222021 is an apocalyptic number.

It is an amenable number.

222101222021 is a deficient number, since it is larger than the sum of its proper divisors (31728746011).

222101222021 is an equidigital number, since it uses as much as digits as its factorization.

222101222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31728746010.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222101222021 its reverse (120222101222), we get a palindrome (342323323243).

The spelling of 222101222021 in words is "two hundred twenty-two billion, one hundred one million, two hundred twenty-two thousand, twenty-one".