206062540221 has 32 divisors (see below), whose sum is σ = 282432469248. Its totient is φ = 133583290880.

The previous prime is 206062540219. The next prime is 206062540237. The reversal of 206062540221 is 122045260602.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 206062540221 - 2¹ = 206062540219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206062540241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14086291 + ... + 14100911.

It is an arithmetic number, because the mean of its divisors is an integer number (8826014664).

Almost surely, 2^206062540221 is an apocalyptic number.

It is an amenable number.

206062540221 is a deficient number, since it is larger than the sum of its proper divisors (76369929027).

206062540221 is a wasteful number, since it uses less digits than its factorization.

206062540221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15461.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 206062540221 in words is "two hundred six billion, sixty-two million, five hundred forty thousand, two hundred twenty-one".