210220221222 has 96 divisors (see below), whose sum is σ = 538348187520. Its totient is φ = 58561493760.

The previous prime is 210220221209. The next prime is 210220221251. The reversal of 210220221222 is 222122022012.

210220221222 is a `hidden beast` number, since 2 + 1 + 0 + 220 + 221 + 222 = 666.

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 = 210220221195 and 210220221204.

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, 581472 + ... + 870947.

It is an arithmetic number, because the mean of its divisors is an integer number (5607793620).

Almost surely, 2^210220221222 is an apocalyptic number.

210220221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210220221222 is an abundant number, since it is smaller than the sum of its proper divisors (328127966298).

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

210220221222 is a wasteful number, since it uses less digits than its factorization.

210220221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452498 (or 1452495 counting only the distinct ones).

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

Adding to 210220221222 its reverse (222122022012), we get a palindrome (432342243234).

The spelling of 210220221222 in words is "two hundred ten billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-two".