10101002020 has 48 divisors (see below), whose sum is σ = 21344214528. Its totient is φ = 4015307520.

The previous prime is 10101001973. The next prime is 10101002027. The reversal of 10101002020 is 2020010101.

It is a junction number, because it is equal to n+sod(n) for n = 10101001994 and 10101002012.

It is not an unprimeable number, because it can be changed into a prime (10101002027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2826835 + ... + 2830405.

It is an arithmetic number, because the mean of its divisors is an integer number (444671136).

Almost surely, 2^10101002020 is an apocalyptic number.

10101002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101002020 is an abundant number, since it is smaller than the sum of its proper divisors (11243212508).

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

10101002020 is a wasteful number, since it uses less digits than its factorization.

10101002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420 (or 4418 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10101002020 its reverse (2020010101), we get a palindrome (12121012121).

The spelling of 10101002020 in words is "ten billion, one hundred one million, two thousand, twenty".