221303201022 has 24 divisors (see below), whose sum is σ = 479508934320. Its totient is φ = 73764862080.

The previous prime is 221303200999. The next prime is 221303201029. The reversal of 221303201022 is 220102303122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221303200986 and 221303201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221303201029) 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 11 ways as a sum of consecutive naturals, for example, 264622 + ... + 715982.

It is an arithmetic number, because the mean of its divisors is an integer number (19979538930).

Almost surely, 2^221303201022 is an apocalyptic number.

221303201022 is an abundant number, since it is smaller than the sum of its proper divisors (258205733298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221303201022 is a wasteful number, since it uses less digits than its factorization.

221303201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478608 (or 478605 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 221303201022 its reverse (220102303122), we get a palindrome (441405504144).

The spelling of 221303201022 in words is "two hundred twenty-one billion, three hundred three million, two hundred one thousand, twenty-two".