20102020104 has 32 divisors (see below), whose sum is σ = 50545552320. Its totient is φ = 6661939776.

The previous prime is 20102020097. The next prime is 20102020139. The reversal of 20102020104 is 40102020102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20102020104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2416612 + ... + 2424915.

It is an arithmetic number, because the mean of its divisors is an integer number (1579548510).

Almost surely, 2^20102020104 is an apocalyptic number.

20102020104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20102020104 is an abundant number, since it is smaller than the sum of its proper divisors (30443532216).

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

20102020104 is a wasteful number, since it uses less digits than its factorization.

20102020104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841709 (or 4841705 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20102020104 its reverse (40102020102), we get a palindrome (60204040206).

The spelling of 20102020104 in words is "twenty billion, one hundred two million, twenty thousand, one hundred four".