221202020022001 has 4 divisors (see below), whose sum is σ = 221283734845552. Its totient is φ = 221120305198452.

The previous prime is 221202020021987. The next prime is 221202020022013. The reversal of 221202020022001 is 100220020202122.

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 221202020022001 - 2⁴³ = 212405926999793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221202021022001) 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, 40857407715 + ... + 40857413128.

It is an arithmetic number, because the mean of its divisors is an integer number (55320933711388).

Almost surely, 2^{221202020022001} is an apocalyptic number.

It is an amenable number.

221202020022001 is a deficient number, since it is larger than the sum of its proper divisors (81714823551).

221202020022001 is an equidigital number, since it uses as much as digits as its factorization.

221202020022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81714823550.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221202020022001 its reverse (100220020202122), we get a palindrome (321422040224123).

The spelling of 221202020022001 in words is "two hundred twenty-one trillion, two hundred two billion, twenty million, twenty-two thousand, one".