1222222220010 has 224 divisors, whose sum is σ = 3631392293760. Its totient is φ = 293575881600.

The previous prime is 1222222219987. The next prime is 1222222220059. The reversal of 1222222220010 is 100222222221.

1222222220010 is a `hidden beast` number, since 1 + 222 + 222 + 220 + 0 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 111 ways as a sum of consecutive naturals, for example, 8670795 + ... + 8810625.

It is an arithmetic number, because the mean of its divisors is an integer number (16211572740).

Almost surely, 2^{1222222220010} is an apocalyptic number.

1222222220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222222220010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1815696146880).

1222222220010 is an abundant number, since it is smaller than the sum of its proper divisors (2409170073750).

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

1222222220010 is a wasteful number, since it uses less digits than its factorization.

1222222220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139976 (or 139961 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1222222220010 its reverse (100222222221), we get a palindrome (1322444442231).

The spelling of 1222222220010 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, ten".