10111111001010 has 64 divisors (see below), whose sum is σ = 27287817701760. Its totient is φ = 2663810763840.

The previous prime is 10111111000993. The next prime is 10111111001077. The reversal of 10111111001010 is 1010011111101.

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 = 10111111000983 and 10111111001001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225571321 + ... + 225616140.

It is an arithmetic number, because the mean of its divisors is an integer number (426372151590).

Almost surely, 2^{10111111001010} is an apocalyptic number.

10111111001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10111111001010 is an abundant number, since it is smaller than the sum of its proper divisors (17176706700750).

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

10111111001010 is a wasteful number, since it uses less digits than its factorization.

10111111001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451187560 (or 451187554 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 10111111001010 its reverse (1010011111101), we get a palindrome (11121122112111).

The spelling of 10111111001010 in words is "ten trillion, one hundred eleven billion, one hundred eleven million, one thousand, ten".