221222020101 has 8 divisors (see below), whose sum is σ = 295507913184.
Its totient is φ = 147208736880.
The previous prime is 221222020099. The next prime is 221222020111. The reversal of 221222020101 is 101020222122.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 221222020101 - 21 = 221222020099 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (221222020111) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68150571 + ... + 68153816.
It is an arithmetic number, because the mean of its divisors is an integer number (36938489148).
Almost surely, 2221222020101 is an apocalyptic number.
It is an amenable number.
221222020101 is a deficient number, since it is larger than the sum of its proper divisors (74285893083).
221222020101 is a wasteful number, since it uses less digits than its factorization.
221222020101 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 136304931.
The product of its (nonzero) digits is 64, while the sum is 15.
Adding to 221222020101 its reverse (101020222122), we get a palindrome (322242242223).
The spelling of 221222020101 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty thousand, one hundred one".