221020122222201 has 8 divisors (see below), whose sum is σ = 294758795116960. Its totient is φ = 147314098737792.

The previous prime is 221020122222181. The next prime is 221020122222209. The reversal of 221020122222201 is 102222221020122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221020122222201 - 2³⁷ = 220882683268729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221020122222209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8162336791 + ... + 8162363868.

It is an arithmetic number, because the mean of its divisors is an integer number (36844849389620).

Almost surely, 2^{221020122222201} is an apocalyptic number.

It is an amenable number.

221020122222201 is a deficient number, since it is larger than the sum of its proper divisors (73738672894759).

221020122222201 is a wasteful number, since it uses less digits than its factorization.

221020122222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16324705175.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221020122222201 its reverse (102222221020122), we get a palindrome (323242343242323).

The spelling of 221020122222201 in words is "two hundred twenty-one trillion, twenty billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred one".