222022111102021 has 4 divisors (see below), whose sum is σ = 222098433590700. Its totient is φ = 221945788613344.

The previous prime is 222022111102003. The next prime is 222022111102073. The reversal of 222022111102021 is 120201111220222.

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 89470524360996 + 132551586741025 = 9458886^2 + 11513105^2 .

It is a cyclic number.

It is not a de Polignac number, because 222022111102021 - 2¹¹ = 222022111099973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222022111102021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222022111100021) 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, 38161239976 + ... + 38161245793.

It is an arithmetic number, because the mean of its divisors is an integer number (55524608397675).

Almost surely, 2^{222022111102021} is an apocalyptic number.

It is an amenable number.

222022111102021 is a deficient number, since it is larger than the sum of its proper divisors (76322488679).

222022111102021 is an equidigital number, since it uses as much as digits as its factorization.

222022111102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76322488678.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222022111102021 its reverse (120201111220222), we get a palindrome (342223222322243).

The spelling of 222022111102021 in words is "two hundred twenty-two trillion, twenty-two billion, one hundred eleven million, one hundred two thousand, twenty-one".