2021222122001 has 4 divisors (see below), whose sum is σ = 2021294266992. Its totient is φ = 2021149977012.

The previous prime is 2021222121967. The next prime is 2021222122039. The reversal of 2021222122001 is 1002212221202.

It is a happy number.

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 2021222122001 - 2⁶ = 2021222121937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021222122081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36030455 + ... + 36086508.

It is an arithmetic number, because the mean of its divisors is an integer number (505323566748).

Almost surely, 2^{2021222122001} is an apocalyptic number.

It is an amenable number.

2021222122001 is a deficient number, since it is larger than the sum of its proper divisors (72144991).

2021222122001 is an equidigital number, since it uses as much as digits as its factorization.

2021222122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72144990.

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

Adding to 2021222122001 its reverse (1002212221202), we get a palindrome (3023434343203).

The spelling of 2021222122001 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, one".