1217125130 has 16 divisors (see below), whose sum is σ = 2359350504. Its totient is φ = 449400000.

The previous prime is 1217125127. The next prime is 1217125141. The reversal of 1217125130 is 315217121.

It can be written as a sum of positive squares in 4 ways, for example, as 870309001 + 346816129 = 29501^2 + 18623^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1217125096 and 1217125105.

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, 4681121 + ... + 4681380.

Almost surely, 2^1217125130 is an apocalyptic number.

1217125130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1217125130 is a deficient number, since it is larger than the sum of its proper divisors (1142225374).

1217125130 is a wasteful number, since it uses less digits than its factorization.

1217125130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362521.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1217125130 is about 34887.3204760698. The cubic root of 1217125130 is about 1067.6897574320.

The spelling of 1217125130 in words is "one billion, two hundred seventeen million, one hundred twenty-five thousand, one hundred thirty".