1226020512 has 24 divisors (see below), whose sum is σ = 3218304096. Its totient is φ = 408673472.

The previous prime is 1226020511. The next prime is 1226020529. The reversal of 1226020512 is 2150206221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (1226020511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6385428 + ... + 6385619.

It is an arithmetic number, because the mean of its divisors is an integer number (134096004).

Almost surely, 2^1226020512 is an apocalyptic number.

1226020512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1226020512 is an abundant number, since it is smaller than the sum of its proper divisors (1992283584).

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

1226020512 is a wasteful number, since it uses less digits than its factorization.

1226020512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12771060 (or 12771052 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1226020512 is about 35014.5757078392. The cubic root of 1226020512 is about 1070.2845232819.

Adding to 1226020512 its reverse (2150206221), we get a palindrome (3376226733).

The spelling of 1226020512 in words is "one billion, two hundred twenty-six million, twenty thousand, five hundred twelve".