20110002012 has 18 divisors (see below), whose sum is σ = 50833616288. Its totient is φ = 6703333992.

The previous prime is 20110001987. The next prime is 20110002013. The reversal of 20110002012 is 21020001102.

It is a tau number, because it is divible by the number of its divisors (18).

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 = 20110001985 and 20110002003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110002013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279305548 + ... + 279305619.

Almost surely, 2^20110002012 is an apocalyptic number.

It is an amenable number.

20110002012 is an abundant number, since it is smaller than the sum of its proper divisors (30723614276).

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

20110002012 is a wasteful number, since it uses less digits than its factorization.

20110002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558611177 (or 558611172 counting only the distinct ones).

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

Adding to 20110002012 its reverse (21020001102), we get a palindrome (41130003114).

The spelling of 20110002012 in words is "twenty billion, one hundred ten million, two thousand, twelve".