1222204022220 has 24 divisors (see below), whose sum is σ = 3422171262384. Its totient is φ = 325921072576.

The previous prime is 1222204022209. The next prime is 1222204022239. The reversal of 1222204022220 is 222204022221.

It is a happy number.

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, 10185033459 + ... + 10185033578.

It is an arithmetic number, because the mean of its divisors is an integer number (142590469266).

Almost surely, 2^{1222204022220} is an apocalyptic number.

1222204022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222204022220 is an abundant number, since it is smaller than the sum of its proper divisors (2199967240164).

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

1222204022220 is a wasteful number, since it uses less digits than its factorization.

1222204022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20370067049 (or 20370067047 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 1222204022220 its reverse (222204022221), we get a palindrome (1444408044441).

Subtracting from 1222204022220 its reverse (222204022221), we obtain a palindrome (999999999999).

The spelling of 1222204022220 in words is "one trillion, two hundred twenty-two billion, two hundred four million, twenty-two thousand, two hundred twenty".