1010102020020 has 72 divisors (see below), whose sum is σ = 3064920374880. Its totient is φ = 269277528000.

The previous prime is 1010102020007. The next prime is 1010102020043. The reversal of 1010102020020 is 200202010101.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1010102019984 and 1010102020011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277890 + ... + 1448249.

It is an arithmetic number, because the mean of its divisors is an integer number (42568338540).

Almost surely, 2^{1010102020020} is an apocalyptic number.

1010102020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010102020020 is an abundant number, since it is smaller than the sum of its proper divisors (2054818354860).

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

1010102020020 is a wasteful number, since it uses less digits than its factorization.

1010102020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729405 (or 1729400 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1010102020020 its reverse (200202010101), we get a palindrome (1210304030121).

The spelling of 1010102020020 in words is "one trillion, ten billion, one hundred two million, twenty thousand, twenty".