1222102220 has 24 divisors (see below), whose sum is σ = 2567476464. Its totient is φ = 488638656.

The previous prime is 1222102201. The next prime is 1222102261. The reversal of 1222102220 is 222012221.

It is a super-2 number, since 2×1222102220² = 2987067672257856800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222102195 and 1222102204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42854 + ... + 65426.

It is an arithmetic number, because the mean of its divisors is an integer number (106978186).

Almost surely, 2^1222102220 is an apocalyptic number.

1222102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222102220 is an abundant number, since it is smaller than the sum of its proper divisors (1345374244).

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

1222102220 is a wasteful number, since it uses less digits than its factorization.

1222102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25289 (or 25287 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1222102220 is about 34958.5786324330. The cubic root of 1222102220 is about 1069.1431169217.

Adding to 1222102220 its reverse (222012221), we get a palindrome (1444114441).

The spelling of 1222102220 in words is "one billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty".