1261036212 has 24 divisors (see below), whose sum is σ = 2986336416. Its totient is φ = 414071328.

The previous prime is 1261036211. The next prime is 1261036219. The reversal of 1261036212 is 2126301621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261036211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 783423 + ... + 785030.

It is an arithmetic number, because the mean of its divisors is an integer number (124430684).

Almost surely, 2^1261036212 is an apocalyptic number.

1261036212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1261036212 is an abundant number, since it is smaller than the sum of its proper divisors (1725300204).

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

1261036212 is a wasteful number, since it uses less digits than its factorization.

1261036212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568527 (or 1568525 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1261036212 is about 35511.0716819417. The cubic root of 1261036212 is about 1080.3783002589.

Adding to 1261036212 its reverse (2126301621), we get a palindrome (3387337833).

The spelling of 1261036212 in words is "one billion, two hundred sixty-one million, thirty-six thousand, two hundred twelve".