10121220200100 has 72 divisors (see below), whose sum is σ = 29287398021280. Its totient is φ = 2698684750080.

The previous prime is 10121220200099. The next prime is 10121220200131. The reversal of 10121220200100 is 100202212101.

It is a super-3 number, since 3×10121220200100³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 724656 + ... + 4557144.

Almost surely, 2^{10121220200100} is an apocalyptic number.

10121220200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121220200100 is an abundant number, since it is smaller than the sum of its proper divisors (19166177821180).

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

10121220200100 is a wasteful number, since it uses less digits than its factorization.

10121220200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841309 (or 3841302 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10121220200100 its reverse (100202212101), we get a palindrome (10221422412201).

The spelling of 10121220200100 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, one hundred".