210100001100020 has 24 divisors (see below), whose sum is σ = 441240299564064. Its totient is φ = 84034229534496.

The previous prime is 210100001099981. The next prime is 210100001100043. The reversal of 210100001100020 is 20001100001012.

It is a junction number, because it is equal to n+sod(n) for n = 210100001099980 and 210100001100007.

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, 360383054 + ... + 360965573.

It is an arithmetic number, because the mean of its divisors is an integer number (18385012481836).

Almost surely, 2^{210100001100020} is an apocalyptic number.

210100001100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210100001100020 is an abundant number, since it is smaller than the sum of its proper divisors (231140298464044).

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

210100001100020 is a wasteful number, since it uses less digits than its factorization.

210100001100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721363199 (or 721363197 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 210100001100020 its reverse (20001100001012), we get a palindrome (230101101101032).

The spelling of 210100001100020 in words is "two hundred ten trillion, one hundred billion, one million, one hundred thousand, twenty".