1222200211220 has 24 divisors (see below), whose sum is σ = 2566663563744. Its totient is φ = 488871871136.

The previous prime is 1222200211181. The next prime is 1222200211357. The reversal of 1222200211220 is 221120022221.

It is a happy number.

It is a super-2 number, since 2×1222200211220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787247 + ... + 1750473.

It is an arithmetic number, because the mean of its divisors is an integer number (106944315156).

Almost surely, 2^{1222200211220} is an apocalyptic number.

1222200211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222200211220 is an abundant number, since it is smaller than the sum of its proper divisors (1344463352524).

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

1222200211220 is a wasteful number, since it uses less digits than its factorization.

1222200211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026679 (or 1026677 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1222200211220 its reverse (221120022221), we get a palindrome (1443320233441).

The spelling of 1222200211220 in words is "one trillion, two hundred twenty-two billion, two hundred million, two hundred eleven thousand, two hundred twenty".