205561200121014 has 16 divisors (see below), whose sum is σ = 411223937065200. Its totient is φ = 68503477236480.

The previous prime is 205561200121009. The next prime is 205561200121031. The reversal of 205561200121014 is 410121002165502.

205561200121014 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205561200121014² (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 7 ways as a sum of consecutive naturals, for example, 4230674647 + ... + 4230723234.

It is an arithmetic number, because the mean of its divisors is an integer number (25701496066575).

Almost surely, 2^{205561200121014} is an apocalyptic number.

205561200121014 is an abundant number, since it is smaller than the sum of its proper divisors (205662736944186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205561200121014 is a wasteful number, since it uses less digits than its factorization.

205561200121014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8461401935.

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

Adding to 205561200121014 its reverse (410121002165502), we get a palindrome (615682202286516).

The spelling of 205561200121014 in words is "two hundred five trillion, five hundred sixty-one billion, two hundred million, one hundred twenty-one thousand, fourteen".