12011220770 has 32 divisors (see below), whose sum is σ = 22573589760. Its totient is φ = 4592871360.

The previous prime is 12011220761. The next prime is 12011220779. The reversal of 12011220770 is 7702211021.

It is an interprime number because it is at equal distance from previous prime (12011220761) and next prime (12011220779).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (12011220779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396875 + ... + 426065.

It is an arithmetic number, because the mean of its divisors is an integer number (705424680).

Almost surely, 2^12011220770 is an apocalyptic number.

12011220770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011220770 is a deficient number, since it is larger than the sum of its proper divisors (10562368990).

12011220770 is a wasteful number, since it uses less digits than its factorization.

12011220770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31010.

The product of its (nonzero) digits is 392, while the sum is 23.

Adding to 12011220770 its reverse (7702211021), we get a palindrome (19713431791).

The spelling of 12011220770 in words is "twelve billion, eleven million, two hundred twenty thousand, seven hundred seventy".