202122021222 has 32 divisors (see below), whose sum is σ = 489992780160. Its totient is φ = 61249097160.

The previous prime is 202122021193. The next prime is 202122021323. The reversal of 202122021222 is 222120221202.

202122021222 is a `hidden beast` number, since 202 + 1 + 220 + 21 + 222 = 666.

It is a super-2 number, since 2×202122021222² (a number of 23 digits) contains 22 as substring.

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 = 202122021195 and 202122021204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170135788 + ... + 170136975.

It is an arithmetic number, because the mean of its divisors is an integer number (15312274380).

Almost surely, 2^202122021222 is an apocalyptic number.

202122021222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

202122021222 is an abundant number, since it is smaller than the sum of its proper divisors (287870758938).

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

202122021222 is a wasteful number, since it uses less digits than its factorization.

202122021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340272785 (or 340272779 counting only the distinct ones).

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

Adding to 202122021222 its reverse (222120221202), we get a palindrome (424242242424).

The spelling of 202122021222 in words is "two hundred two billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty-two".