12111102021010 has 16 divisors (see below), whose sum is σ = 21800426420376. Its totient is φ = 4844342412288.

The previous prime is 12111102020917. The next prime is 12111102021043. The reversal of 12111102021010 is 1012020111121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12108179861761 + 2922159249 = 3479681^2 + 54057^2 .

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 7 ways as a sum of consecutive naturals, for example, 11781519 + ... + 12768178.

Almost surely, 2^{12111102021010} is an apocalyptic number.

12111102021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111102021010 is a deficient number, since it is larger than the sum of its proper divisors (9689324399366).

12111102021010 is a wasteful number, since it uses less digits than its factorization.

12111102021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24599037.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12111102021010 its reverse (1012020111121), we get a palindrome (13123122132131).

The spelling of 12111102021010 in words is "twelve trillion, one hundred eleven billion, one hundred two million, twenty-one thousand, ten".