1273131220010 has 32 divisors (see below), whose sum is σ = 2469569271120. Its totient is φ = 469764292608.

The previous prime is 1273131220003. The next prime is 1273131220043. The reversal of 1273131220010 is 100221313721.

It can be written as a sum of positive squares in 8 ways, for example, as 661133236201 + 611997983809 = 813101^2 + 782303^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3085655 + ... + 3473834.

Almost surely, 2^{1273131220010} is an apocalyptic number.

1273131220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1273131220010 is a deficient number, since it is larger than the sum of its proper divisors (1196438051110).

1273131220010 is a wasteful number, since it uses less digits than its factorization.

1273131220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561002.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 1273131220010 its reverse (100221313721), we get a palindrome (1373352533731).

The spelling of 1273131220010 in words is "one trillion, two hundred seventy-three billion, one hundred thirty-one million, two hundred twenty thousand, ten".