20102102012 has 12 divisors (see below), whose sum is σ = 35355457200. Its totient is φ = 10000542816.

The previous prime is 20102101951. The next prime is 20102102039. The reversal of 20102102012 is 21020120102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20102101984 and 20102102002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12626153 + ... + 12627744.

It is an arithmetic number, because the mean of its divisors is an integer number (2946288100).

Almost surely, 2^20102102012 is an apocalyptic number.

It is an amenable number.

20102102012 is a deficient number, since it is larger than the sum of its proper divisors (15253355188).

20102102012 is a wasteful number, since it uses less digits than its factorization.

20102102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25254100 (or 25254098 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20102102012 its reverse (21020120102), we get a palindrome (41122222114).

The spelling of 20102102012 in words is "twenty billion, one hundred two million, one hundred two thousand, twelve".