1212274720 has 48 divisors (see below), whose sum is σ = 2892394008. Its totient is φ = 480102400.

The previous prime is 1212274717. The next prime is 1212274741. The reversal of 1212274720 is 274722121.

It can be written as a sum of positive squares in 4 ways, for example, as 1099320336 + 112954384 = 33156^2 + 10628^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21349 + ... + 53668.

Almost surely, 2^1212274720 is an apocalyptic number.

1212274720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212274720 is an abundant number, since it is smaller than the sum of its proper divisors (1680119288).

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

1212274720 is a wasteful number, since it uses less digits than its factorization.

1212274720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75133 (or 75125 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 1212274720 is about 34817.7357104106. The cubic root of 1212274720 is about 1066.2695726760.

Adding to 1212274720 its reverse (274722121), we get a palindrome (1486996841).

The spelling of 1212274720 in words is "one billion, two hundred twelve million, two hundred seventy-four thousand, seven hundred twenty".