1220112222210 has 48 divisors (see below), whose sum is σ = 3625476319296. Its totient is φ = 278882793504.

The previous prime is 1220112222191. The next prime is 1220112222223. The reversal of 1220112222210 is 122222110221.

It is a happy number.

1220112222210 is a `hidden beast` number, since 1 + 220 + 1 + 1 + 222 + 221 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 968342404 + ... + 968343663.

It is an arithmetic number, because the mean of its divisors is an integer number (75530756652).

Almost surely, 2^{1220112222210} is an apocalyptic number.

1220112222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220112222210 is an abundant number, since it is smaller than the sum of its proper divisors (2405364097086).

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

1220112222210 is a wasteful number, since it uses less digits than its factorization.

1220112222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936686087 (or 1936686084 counting only the distinct ones).

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

Adding to 1220112222210 its reverse (122222110221), we get a palindrome (1342334332431).

The spelling of 1220112222210 in words is "one trillion, two hundred twenty billion, one hundred twelve million, two hundred twenty-two thousand, two hundred ten".