12111001010 has 8 divisors (see below), whose sum is σ = 21799801836. Its totient is φ = 4844400400.

The previous prime is 12111000989. The next prime is 12111001039. The reversal of 12111001010 is 1010011121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10609206001 + 1501795009 = 103001^2 + 38753^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 605550041 + ... + 605550060.

Almost surely, 2^12111001010 is an apocalyptic number.

12111001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111001010 is a deficient number, since it is larger than the sum of its proper divisors (9688800826).

12111001010 is a wasteful number, since it uses less digits than its factorization.

12111001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211100108.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 12111001010 its reverse (1010011121), we get a palindrome (13121012131).

The spelling of 12111001010 in words is "twelve billion, one hundred eleven million, one thousand, ten".