5205154121012 has 24 divisors (see below), whose sum is σ = 9409033304832. Its totient is φ = 2516969145600.

The previous prime is 5205154120979. The next prime is 5205154121029. The reversal of 5205154121012 is 2101214515025.

It is a congruent number.

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, 13592189 + ... + 13969892.

It is an arithmetic number, because the mean of its divisors is an integer number (392043054368).

Almost surely, 2^{5205154121012} is an apocalyptic number.

It is an amenable number.

5205154121012 is a deficient number, since it is larger than the sum of its proper divisors (4203879183820).

5205154121012 is a wasteful number, since it uses less digits than its factorization.

5205154121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27563639 (or 27563637 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 5205154121012 its reverse (2101214515025), we get a palindrome (7306368636037).

The spelling of 5205154121012 in words is "five trillion, two hundred five billion, one hundred fifty-four million, one hundred twenty-one thousand, twelve".