1222203404420 has 192 divisors, whose sum is σ = 2709080640000. Its totient is φ = 462571339776.

The previous prime is 1222203404407. The next prime is 1222203404491. The reversal of 1222203404420 is 244043022221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222203404420.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2722056356 + ... + 2722056804.

It is an arithmetic number, because the mean of its divisors is an integer number (14109795000).

Almost surely, 2^{1222203404420} is an apocalyptic number.

1222203404420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222203404420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354540320000).

1222203404420 is an abundant number, since it is smaller than the sum of its proper divisors (1486877235580).

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

1222203404420 is a wasteful number, since it uses less digits than its factorization.

1222203404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 1222203404420 its reverse (244043022221), we get a palindrome (1466246426641).

The spelling of 1222203404420 in words is "one trillion, two hundred twenty-two billion, two hundred three million, four hundred four thousand, four hundred twenty".