22222121002201 has 4 divisors (see below), whose sum is σ = 22225607925412. Its totient is φ = 22218634078992.

The previous prime is 22222121002189. The next prime is 22222121002223. The reversal of 22222121002201 is 10220012122222.

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 21027360513600 + 1194760488601 = 4585560^2 + 1093051^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222121002201 - 2¹⁹ = 22222120477913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22222121000201) 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, 1743452046 + ... + 1743464791.

It is an arithmetic number, because the mean of its divisors is an integer number (5556401981353).

Almost surely, 2^{22222121002201} is an apocalyptic number.

It is an amenable number.

22222121002201 is a deficient number, since it is larger than the sum of its proper divisors (3486923211).

22222121002201 is an equidigital number, since it uses as much as digits as its factorization.

22222121002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486923210.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22222121002201 its reverse (10220012122222), we get a palindrome (32442133124423).

The spelling of 22222121002201 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, two thousand, two hundred one".