12011221011010 has 32 divisors (see below), whose sum is σ = 23283450715392. Its totient is φ = 4434881753280.

The previous prime is 12011221010977. The next prime is 12011221011047. The reversal of 12011221011010 is 1011012211021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 28692627 + ... + 29108233.

It is an arithmetic number, because the mean of its divisors is an integer number (727607834856).

Almost surely, 2^{12011221011010} is an apocalyptic number.

12011221011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011221011010 is a deficient number, since it is larger than the sum of its proper divisors (11272229704382).

12011221011010 is a wasteful number, since it uses less digits than its factorization.

12011221011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637938.

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

Adding to 12011221011010 its reverse (1011012211021), we get a palindrome (13022233222031).

The spelling of 12011221011010 in words is "twelve trillion, eleven billion, two hundred twenty-one million, eleven thousand, ten".