205240015102012 has 48 divisors (see below), whose sum is σ = 404479289217024. Its totient is φ = 90277507512000.

The previous prime is 205240015101977. The next prime is 205240015102033. The reversal of 205240015102012 is 210201510042502.

It is a super-2 number, since 2×205240015102012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27362878 + ... + 34047130.

It is an arithmetic number, because the mean of its divisors is an integer number (8426651858688).

Almost surely, 2^{205240015102012} is an apocalyptic number.

205240015102012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

205240015102012 is a deficient number, since it is larger than the sum of its proper divisors (199239274115012).

205240015102012 is a wasteful number, since it uses less digits than its factorization.

205240015102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706810 (or 6706808 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 205240015102012 its reverse (210201510042502), we get a palindrome (415441525144514).

The spelling of 205240015102012 in words is "two hundred five trillion, two hundred forty billion, fifteen million, one hundred two thousand, twelve".