100020010121200 has 60 divisors (see below), whose sum is σ = 258782541584728. Its totient is φ = 36930465273600.

The previous prime is 100020010121197. The next prime is 100020010121201. The reversal of 100020010121200 is 2121010020001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020010121201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9617303466 + ... + 9617313865.

Almost surely, 2^{100020010121200} is an apocalyptic number.

100020010121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020010121200 is an abundant number, since it is smaller than the sum of its proper divisors (158762531463528).

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

100020010121200 is a wasteful number, since it uses less digits than its factorization.

100020010121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19234617362 (or 19234617351 counting only the distinct ones).

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

Adding to 100020010121200 its reverse (2121010020001), we get a palindrome (102141020141201).

The spelling of 100020010121200 in words is "one hundred trillion, twenty billion, ten million, one hundred twenty-one thousand, two hundred".