1260114378921 has 10 divisors (see below), whose sum is σ = 1882393084682. Its totient is φ = 840076252560.

The previous prime is 1260114378907. The next prime is 1260114378931. The reversal of 1260114378921 is 1298734110621.

1260114378921 is a `hidden beast` number, since 1 + 2 + 601 + 1 + 4 + 37 + 8 + 9 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1170213351696 + 89901027225 = 1081764^2 + 299835^2 .

It is not a de Polignac number, because 1260114378921 - 2²³ = 1260105990313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1260114378931) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 7778483740 + ... + 7778483901.

Almost surely, 2^{1260114378921} is an apocalyptic number.

It is an amenable number.

1260114378921 is a deficient number, since it is larger than the sum of its proper divisors (622278705761).

1260114378921 is an equidigital number, since it uses as much as digits as its factorization.

1260114378921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15556967653 (or 15556967644 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 1260114378921 in words is "one trillion, two hundred sixty billion, one hundred fourteen million, three hundred seventy-eight thousand, nine hundred twenty-one".