1223221100010 has 128 divisors (see below), whose sum is σ = 3710861489664. Its totient is φ = 251110886400.

The previous prime is 1223221100009. The next prime is 1223221100011. The reversal of 1223221100010 is 100011223221.

It is an interprime number because it is at equal distance from previous prime (1223221100009) and next prime (1223221100011).

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

It is not an unprimeable number, because it can be changed into a prime (1223221100011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5953941 + ... + 6155960.

It is an arithmetic number, because the mean of its divisors is an integer number (28991105388).

Almost surely, 2^{1223221100010} is an apocalyptic number.

1223221100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223221100010 is an abundant number, since it is smaller than the sum of its proper divisors (2487640389654).

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

1223221100010 is a wasteful number, since it uses less digits than its factorization.

1223221100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12109968.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1223221100010 its reverse (100011223221), we get a palindrome (1323232323231).

It can be divided in two parts, 1223221 and 100010, that added together give a palindrome (1323231).

The spelling of 1223221100010 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-one million, one hundred thousand, ten".