20100312020 has 48 divisors (see below), whose sum is σ = 42826362768. Its totient is φ = 7923041280.

The previous prime is 20100311923. The next prime is 20100312041. The reversal of 20100312020 is 2021300102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 89946256 + 20010365764 = 9484^2 + 141458^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20100311992 and 20100312010.

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 15 ways as a sum of consecutive naturals, for example, 1859030 + ... + 1869810.

It is an arithmetic number, because the mean of its divisors is an integer number (892215891).

Almost surely, 2^20100312020 is an apocalyptic number.

20100312020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100312020 is an abundant number, since it is smaller than the sum of its proper divisors (22726050748).

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

20100312020 is a wasteful number, since it uses less digits than its factorization.

20100312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12140 (or 12138 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20100312020 its reverse (2021300102), we get a palindrome (22121612122).

The spelling of 20100312020 in words is "twenty billion, one hundred million, three hundred twelve thousand, twenty".