100000201121020 has 24 divisors (see below), whose sum is σ = 210011849233200. Its totient is φ = 39997903900032.

The previous prime is 100000201121011. The next prime is 100000201121089. The reversal of 100000201121020 is 20121102000001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100000201120988 and 100000201121006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135657505 + ... + 136392664.

It is an arithmetic number, because the mean of its divisors is an integer number (8750493718050).

Almost surely, 2^{100000201121020} is an apocalyptic number.

100000201121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000201121020 is an abundant number, since it is smaller than the sum of its proper divisors (110011648112180).

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

100000201121020 is a wasteful number, since it uses less digits than its factorization.

100000201121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272068557 (or 272068555 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100000201121020 its reverse (20121102000001), we get a palindrome (120121303121021).

The spelling of 100000201121020 in words is "one hundred trillion, two hundred one million, one hundred twenty-one thousand, twenty".