20212212222001 has 4 divisors (see below), whose sum is σ = 20864219067904. Its totient is φ = 19560205376100.

The previous prime is 20212212221987. The next prime is 20212212222017. The reversal of 20212212222001 is 10022221221202.

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 20212212222001 - 2⁵ = 20212212221969 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 20212212222001.

It is not an unprimeable number, because it can be changed into a prime (20212212222031) 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, 326003422905 + ... + 326003422966.

It is an arithmetic number, because the mean of its divisors is an integer number (5216054766976).

Almost surely, 2^{20212212222001} is an apocalyptic number.

It is an amenable number.

20212212222001 is a deficient number, since it is larger than the sum of its proper divisors (652006845903).

20212212222001 is an equidigital number, since it uses as much as digits as its factorization.

20212212222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652006845902.

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

Adding to 20212212222001 its reverse (10022221221202), we get a palindrome (30234433443203).

The spelling of 20212212222001 in words is "twenty trillion, two hundred twelve billion, two hundred twelve million, two hundred twenty-two thousand, one".