10102020120020 has 48 divisors (see below), whose sum is σ = 21946993286400. Its totient is φ = 3901251984000.

The previous prime is 10102020119957. The next prime is 10102020120097. The reversal of 10102020120020 is 2002102020101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10102020119983 and 10102020120010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10108421 + ... + 11062739.

It is an arithmetic number, because the mean of its divisors is an integer number (457229026800).

Almost surely, 2^{10102020120020} is an apocalyptic number.

10102020120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10102020120020 is an abundant number, since it is smaller than the sum of its proper divisors (11844973166380).

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

10102020120020 is a wasteful number, since it uses less digits than its factorization.

10102020120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972608 (or 972606 counting only the distinct ones).

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

Adding to 10102020120020 its reverse (2002102020101), we get a palindrome (12104122140121).

The spelling of 10102020120020 in words is "ten trillion, one hundred two billion, twenty million, one hundred twenty thousand, twenty".