1243121130410 has 16 divisors (see below), whose sum is σ = 2237798406312. Its totient is φ = 497208369600.

The previous prime is 1243121130403. The next prime is 1243121130421. The reversal of 1243121130410 is 140311213421.

It can be written as a sum of positive squares in 4 ways, for example, as 1229532798649 + 13588331761 = 1108843^2 + 116569^2 .

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, 4879901 + ... + 5128320.

Almost surely, 2^{1243121130410} is an apocalyptic number.

1243121130410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243121130410 is a deficient number, since it is larger than the sum of its proper divisors (994677275902).

1243121130410 is a wasteful number, since it uses less digits than its factorization.

1243121130410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020649.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1243121130410 its reverse (140311213421), we get a palindrome (1383432343831).

The spelling of 1243121130410 in words is "one trillion, two hundred forty-three billion, one hundred twenty-one million, one hundred thirty thousand, four hundred ten".