202021111002222 has 48 divisors (see below), whose sum is σ = 457346741922720. Its totient is φ = 64327438840896.

The previous prime is 202021111002209. The next prime is 202021111002253. The reversal of 202021111002222 is 222200111120202.

It is a happy number.

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 = 202021111002195 and 202021111002204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321994197 + ... + 322620992.

It is an arithmetic number, because the mean of its divisors is an integer number (9528057123390).

Almost surely, 2^{202021111002222} is an apocalyptic number.

202021111002222 is an abundant number, since it is smaller than the sum of its proper divisors (255325630920498).

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

202021111002222 is a wasteful number, since it uses less digits than its factorization.

202021111002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644615977 (or 644615974 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202021111002222 its reverse (222200111120202), we get a palindrome (424221222122424).

The spelling of 202021111002222 in words is "two hundred two trillion, twenty-one billion, one hundred eleven million, two thousand, two hundred twenty-two".