100012002120020 has 24 divisors (see below), whose sum is σ = 212683751347200. Its totient is φ = 39498410963232.

The previous prime is 100012002120013. The next prime is 100012002120031. The reversal of 100012002120020 is 20021200210001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100012002119983 and 100012002120010.

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, 31649366180 + ... + 31649369339.

It is an arithmetic number, because the mean of its divisors is an integer number (8861822972800).

Almost surely, 2^{100012002120020} is an apocalyptic number.

100012002120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100012002120020 is an abundant number, since it is smaller than the sum of its proper divisors (112671749227180).

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

100012002120020 is a wasteful number, since it uses less digits than its factorization.

100012002120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63298735607 (or 63298735605 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100012002120020 its reverse (20021200210001), we get a palindrome (120033202330021).

The spelling of 100012002120020 in words is "one hundred trillion, twelve billion, two million, one hundred twenty thousand, twenty".