222201201121021 has 4 divisors (see below), whose sum is σ = 222201425016544. Its totient is φ = 222200977225500.

The previous prime is 222201201120959. The next prime is 222201201121121. The reversal of 222201201121021 is 120121102102222.

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 222201201121021 - 2¹¹ = 222201201118973 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 222201201121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201201121121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110452455 + ... + 112446196.

It is an arithmetic number, because the mean of its divisors is an integer number (55550356254136).

Almost surely, 2^{222201201121021} is an apocalyptic number.

It is an amenable number.

222201201121021 is a deficient number, since it is larger than the sum of its proper divisors (223895523).

222201201121021 is an equidigital number, since it uses as much as digits as its factorization.

222201201121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223895522.

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

Adding to 222201201121021 its reverse (120121102102222), we get a palindrome (342322303223243).

The spelling of 222201201121021 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred one million, one hundred twenty-one thousand, twenty-one".