1213225270 has 16 divisors (see below), whose sum is σ = 2189514240. Its totient is φ = 484021504.

The previous prime is 1213225267. The next prime is 1213225303. The reversal of 1213225270 is 725223121.

It is a congruent number.

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, 154555 + ... + 162214.

It is an arithmetic number, because the mean of its divisors is an integer number (136844640).

Almost surely, 2^1213225270 is an apocalyptic number.

1213225270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213225270 is a deficient number, since it is larger than the sum of its proper divisors (976288970).

1213225270 is a wasteful number, since it uses less digits than its factorization.

1213225270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317159.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1213225270 is about 34831.3834063478. The cubic root of 1213225270 is about 1066.5481887722.

Adding to 1213225270 its reverse (725223121), we get a palindrome (1938448391).

The spelling of 1213225270 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, two hundred seventy".