1212722260 has 12 divisors (see below), whose sum is σ = 2546716788. Its totient is φ = 485088896.

The previous prime is 1212722257. The next prime is 1212722267. The reversal of 1212722260 is 622272121.

It can be written as a sum of positive squares in 2 ways, for example, as 320624836 + 892097424 = 17906^2 + 29868^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212722267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30318037 + ... + 30318076.

It is an arithmetic number, because the mean of its divisors is an integer number (212226399).

Almost surely, 2^1212722260 is an apocalyptic number.

1212722260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212722260 is an abundant number, since it is smaller than the sum of its proper divisors (1333994528).

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

1212722260 is a wasteful number, since it uses less digits than its factorization.

1212722260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60636122 (or 60636120 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1212722260 is about 34824.1620143256. The cubic root of 1212722260 is about 1066.4007694435.

Adding to 1212722260 its reverse (622272121), we get a palindrome (1834994381).

The spelling of 1212722260 in words is "one billion, two hundred twelve million, seven hundred twenty-two thousand, two hundred sixty".