1220010100100 has 216 divisors, whose sum is σ = 3071078230080. Its totient is φ = 419200531200.

The previous prime is 1220010100061. The next prime is 1220010100103. The reversal of 1220010100100 is 10010100221.

It is not an unprimeable number, because it can be changed into a prime (1220010100103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 91263617 + ... + 91276983.

Almost surely, 2^{1220010100100} is an apocalyptic number.

1220010100100 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 1220010100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535539115040).

1220010100100 is an abundant number, since it is smaller than the sum of its proper divisors (1851068129980).

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

1220010100100 is a wasteful number, since it uses less digits than its factorization.

1220010100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13819 (or 13801 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1220010100100 its reverse (10010100221), we get a palindrome (1230020200321).

The spelling of 1220010100100 in words is "one trillion, two hundred twenty billion, ten million, one hundred thousand, one hundred".