221222020001 has 8 divisors (see below), whose sum is σ = 221845413504. Its totient is φ = 220599091440.

The previous prime is 221222019989. The next prime is 221222020003. The reversal of 221222020001 is 100020222122.

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

It is a cyclic number.

It is not a de Polignac number, because 221222020001 - 2¹⁰ = 221222018977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221222020003) 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 7 ways as a sum of consecutive naturals, for example, 847946 + ... + 1077708.

It is an arithmetic number, because the mean of its divisors is an integer number (27730676688).

Almost surely, 2^221222020001 is an apocalyptic number.

It is an amenable number.

221222020001 is a deficient number, since it is larger than the sum of its proper divisors (623393503).

221222020001 is a wasteful number, since it uses less digits than its factorization.

221222020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232471.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221222020001 its reverse (100020222122), we get a palindrome (321242242123).

It can be divided in two parts, 221 and 222020001, that added together give a palindrome (222020222).

The spelling of 221222020001 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty thousand, one".