100120121001020 has 12 divisors (see below), whose sum is σ = 210252254102184. Its totient is φ = 40048048400400.

The previous prime is 100120121000993. The next prime is 100120121001029. The reversal of 100120121001020 is 20100121021001.

It is a junction number, because it is equal to n+sod(n) for n = 100120121000992 and 100120121001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120121001029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2503003025006 + ... + 2503003025045.

It is an arithmetic number, because the mean of its divisors is an integer number (17521021175182).

Almost surely, 2^{100120121001020} is an apocalyptic number.

100120121001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120121001020 is an abundant number, since it is smaller than the sum of its proper divisors (110132133101164).

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

100120121001020 is a wasteful number, since it uses less digits than its factorization.

100120121001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006006050060 (or 5006006050058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100120121001020 its reverse (20100121021001), we get a palindrome (120220242022021).

The spelling of 100120121001020 in words is "one hundred trillion, one hundred twenty billion, one hundred twenty-one million, one thousand, twenty".