1220102000100 has 54 divisors (see below), whose sum is σ = 3824341938690. Its totient is φ = 325360533120.

The previous prime is 1220102000077. The next prime is 1220102000107. The reversal of 1220102000100 is 10002010221.

It can be written as a sum of positive squares in 3 ways, for example, as 5005845504 + 1215096154596 = 70752^2 + 1102314^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1220102000107) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 677833545 + ... + 677835344.

Almost surely, 2^{1220102000100} is an apocalyptic number.

1220102000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220102000100 is an abundant number, since it is smaller than the sum of its proper divisors (2604239938590).

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

1220102000100 is a wasteful number, since it uses less digits than its factorization.

1220102000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355668909 (or 1355668899 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1220102000100 its reverse (10002010221), we get a palindrome (1230104010321).

The spelling of 1220102000100 in words is "one trillion, two hundred twenty billion, one hundred two million, one hundred", and thus it is an aban number.