1254131104521 has 16 divisors (see below), whose sum is σ = 1847517945984. Its totient is φ = 752692495104.

The previous prime is 1254131104517. The next prime is 1254131104561. The reversal of 1254131104521 is 1254011314521.

It is not a de Polignac number, because 1254131104521 - 2² = 1254131104517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1254131104561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534581566 + ... + 534583911.

It is an arithmetic number, because the mean of its divisors is an integer number (115469871624).

Almost surely, 2^{1254131104521} is an apocalyptic number.

It is an amenable number.

1254131104521 is a deficient number, since it is larger than the sum of its proper divisors (593386841463).

1254131104521 is a wasteful number, since it uses less digits than its factorization.

1254131104521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069165520.

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 1254131104521 in words is "one trillion, two hundred fifty-four billion, one hundred thirty-one million, one hundred four thousand, five hundred twenty-one".