102100121200020 has 24 divisors (see below), whose sum is σ = 285880339360224. Its totient is φ = 27226698986656.

The previous prime is 102100121199929. The next prime is 102100121200109. The reversal of 102100121200020 is 20002121001201.

102100121200020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102100121199969 and 102100121200005.

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, 850834343274 + ... + 850834343393.

It is an arithmetic number, because the mean of its divisors is an integer number (11911680806676).

Almost surely, 2^{102100121200020} is an apocalyptic number.

102100121200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100121200020 is an abundant number, since it is smaller than the sum of its proper divisors (183780218160204).

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

102100121200020 is a wasteful number, since it uses less digits than its factorization.

102100121200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701668686679 (or 1701668686677 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102100121200020 its reverse (20002121001201), we get a palindrome (122102242201221).

The spelling of 102100121200020 in words is "one hundred two trillion, one hundred billion, one hundred twenty-one million, two hundred thousand, twenty".