1222222110000 has 800 divisors, whose sum is σ = 4294202415360. Its totient is φ = 298722816000.

The previous prime is 1222222109993. The next prime is 1222222110017. The reversal of 1222222110000 is 112222221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1384169559 + ... + 1384170441.

Almost surely, 2^{1222222110000} is an apocalyptic number.

1222222110000 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 1222222110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2147101207680).

1222222110000 is an abundant number, since it is smaller than the sum of its proper divisors (3071980305360).

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

1222222110000 is a wasteful number, since it uses less digits than its factorization.

1222222110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222222110000 its reverse (112222221), we get a palindrome (1222334332221).

It can be divided in two parts, 1222 and 222110000, that added together give a palindrome (222111222).

The spelling of 1222222110000 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred ten thousand".