20102010012 has 72 divisors (see below), whose sum is σ = 58237242336. Its totient is φ = 5727135744.

The previous prime is 20102010001. The next prime is 20102010079. The reversal of 20102010012 is 21001020102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20102009976 and 20102010003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24033 + ... + 201944.

It is an arithmetic number, because the mean of its divisors is an integer number (808850588).

Almost surely, 2^20102010012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20102010012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29118621168).

20102010012 is an abundant number, since it is smaller than the sum of its proper divisors (38135232324).

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

20102010012 is a wasteful number, since it uses less digits than its factorization.

20102010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226347 (or 226342 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20102010012 its reverse (21001020102), we get a palindrome (41103030114).

The spelling of 20102010012 in words is "twenty billion, one hundred two million, ten thousand, twelve".