12221220100100 has 72 divisors (see below), whose sum is σ = 28931516493600. Its totient is φ = 4443994713600.

The previous prime is 12221220100079. The next prime is 12221220100121. The reversal of 12221220100100 is 100102212221.

12221220100100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12221220100079) and next prime (12221220100121).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99355436 + ... + 99478364.

Almost surely, 2^{12221220100100} is an apocalyptic number.

12221220100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221220100100 is an abundant number, since it is smaller than the sum of its proper divisors (16710296393500).

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

12221220100100 is a wasteful number, since it uses less digits than its factorization.

12221220100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213333 (or 213326 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12221220100100 its reverse (100102212221), we get a palindrome (12321322312321).

The spelling of 12221220100100 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty million, one hundred thousand, one hundred".