205911022412 has 24 divisors (see below), whose sum is σ = 360875600400. Its totient is φ = 102803777856.

The previous prime is 205911022409. The next prime is 205911022417. The reversal of 205911022412 is 214220119502.

It is not an unprimeable number, because it can be changed into a prime (205911022417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18759758 + ... + 18770730.

It is an arithmetic number, because the mean of its divisors is an integer number (15036483350).

Almost surely, 2^205911022412 is an apocalyptic number.

It is an amenable number.

205911022412 is a deficient number, since it is larger than the sum of its proper divisors (154964577988).

205911022412 is a wasteful number, since it uses less digits than its factorization.

205911022412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17465 (or 17463 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 205911022412 in words is "two hundred five billion, nine hundred eleven million, twenty-two thousand, four hundred twelve".