20102012020 has 12 divisors (see below), whose sum is σ = 42214225284. Its totient is φ = 8040804800.

The previous prime is 20102012017. The next prime is 20102012039. The reversal of 20102012020 is 2021020102.

It can be written as a sum of positive squares in 2 ways, for example, as 2324589796 + 17777422224 = 48214^2 + 133332^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20102011988 and 20102012006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502550281 + ... + 502550320.

It is an arithmetic number, because the mean of its divisors is an integer number (3517852107).

Almost surely, 2^20102012020 is an apocalyptic number.

20102012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102012020 is an abundant number, since it is smaller than the sum of its proper divisors (22112213264).

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

20102012020 is a wasteful number, since it uses less digits than its factorization.

20102012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005100610 (or 1005100608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20102012020 its reverse (2021020102), we get a palindrome (22123032122).

The spelling of 20102012020 in words is "twenty billion, one hundred two million, twelve thousand, twenty".