221020020222 has 16 divisors (see below), whose sum is σ = 442046122752. Its totient is φ = 73672326360.

The previous prime is 221020020197. The next prime is 221020020223. The reversal of 221020020222 is 222020020122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020020223) 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, 318123 + ... + 737049.

It is an arithmetic number, because the mean of its divisors is an integer number (27627882672).

Almost surely, 2^221020020222 is an apocalyptic number.

221020020222 is an abundant number, since it is smaller than the sum of its proper divisors (221026102530).

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

221020020222 is a wasteful number, since it uses less digits than its factorization.

221020020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506863.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 221020020222 its reverse (222020020122), we get a palindrome (443040040344).

The spelling of 221020020222 in words is "two hundred twenty-one billion, twenty million, twenty thousand, two hundred twenty-two".