20100312102 has 48 divisors (see below), whose sum is σ = 43568921088. Its totient is φ = 6179303520.

The previous prime is 20100312041. The next prime is 20100312103. The reversal of 20100312102 is 20121300102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100312103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1240183 + ... + 1256285.

It is an arithmetic number, because the mean of its divisors is an integer number (907685856).

Almost surely, 2^20100312102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20100312102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21784460544).

20100312102 is an abundant number, since it is smaller than the sum of its proper divisors (23468608986).

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

20100312102 is a wasteful number, since it uses less digits than its factorization.

20100312102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17365 (or 17352 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20100312102 its reverse (20121300102), we get a palindrome (40221612204).

The spelling of 20100312102 in words is "twenty billion, one hundred million, three hundred twelve thousand, one hundred two".