12110021010 has 24 divisors (see below), whose sum is σ = 31486054860. Its totient is φ = 3229338912.

The previous prime is 12110020981. The next prime is 12110021029. The reversal of 12110021010 is 1012001121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12108141369 + 1879641 = 110037^2 + 1371^2 .

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 = 12110020983 and 12110021001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67277805 + ... + 67277984.

Almost surely, 2^12110021010 is an apocalyptic number.

12110021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12110021010 is an abundant number, since it is smaller than the sum of its proper divisors (19376033850).

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

12110021010 is a wasteful number, since it uses less digits than its factorization.

12110021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134555802 (or 134555799 counting only the distinct ones).

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

Adding to 12110021010 its reverse (1012001121), we get a palindrome (13122022131).

The spelling of 12110021010 in words is "twelve billion, one hundred ten million, twenty-one thousand, ten".