1311226115450 has 12 divisors (see below), whose sum is σ = 2438880574830. Its totient is φ = 524490446160.

The previous prime is 1311226115449. The next prime is 1311226115467. The reversal of 1311226115450 is 545116221131.

It can be written as a sum of positive squares in 3 ways, for example, as 882778630969 + 428447484481 = 939563^2 + 654559^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13112261105 + ... + 13112261204.

Almost surely, 2^{1311226115450} is an apocalyptic number.

1311226115450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311226115450 is a deficient number, since it is larger than the sum of its proper divisors (1127654459380).

1311226115450 is a wasteful number, since it uses less digits than its factorization.

1311226115450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26224522321 (or 26224522316 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 1311226115450 in words is "one trillion, three hundred eleven billion, two hundred twenty-six million, one hundred fifteen thousand, four hundred fifty".