202102221222 has 96 divisors (see below), whose sum is σ = 479784932640. Its totient is φ = 60975936000.

The previous prime is 202102221197. The next prime is 202102221241. The reversal of 202102221222 is 222122201202.

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 = 202102221195 and 202102221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47428572 + ... + 47432832.

It is an arithmetic number, because the mean of its divisors is an integer number (4997759715).

Almost surely, 2^202102221222 is an apocalyptic number.

202102221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 202102221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239892466320).

202102221222 is an abundant number, since it is smaller than the sum of its proper divisors (277682711418).

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

202102221222 is a wasteful number, since it uses less digits than its factorization.

202102221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270 (or 5267 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202102221222 its reverse (222122201202), we get a palindrome (424224422424).

It can be divided in two parts, 202102 and 221222, that added together give a palindrome (423324).

The spelling of 202102221222 in words is "two hundred two billion, one hundred two million, two hundred twenty-one thousand, two hundred twenty-two".