20110111000002 has 32 divisors (see below), whose sum is σ = 46632141452160. Its totient is φ = 6411919448880.

The previous prime is 20110110999971. The next prime is 20110111000073. The reversal of 20110111000002 is 20000011101102.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8095856649 + ... + 8095859132.

It is an arithmetic number, because the mean of its divisors is an integer number (1457254420380).

Almost surely, 2^{20110111000002} is an apocalyptic number.

20110111000002 is an abundant number, since it is smaller than the sum of its proper divisors (26522030452158).

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

20110111000002 is a wasteful number, since it uses less digits than its factorization.

20110111000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16191715815 (or 16191715809 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20110111000002 its reverse (20000011101102), we get a palindrome (40110122101104).

The spelling of 20110111000002 in words is "twenty trillion, one hundred ten billion, one hundred eleven million, two", and thus it is an aban number.