206243422101 has 32 divisors (see below), whose sum is σ = 309912249600. Its totient is φ = 135531506880.

The previous prime is 206243422097. The next prime is 206243422123. The reversal of 206243422101 is 101224342602.

206243422101 is a `hidden beast` number, since 2 + 0 + 6 + 2 + 434 + 221 + 0 + 1 = 666.

It is not a de Polignac number, because 206243422101 - 2² = 206243422097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206243422141) 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, 14326215 + ... + 14340603.

It is an arithmetic number, because the mean of its divisors is an integer number (9684757800).

Almost surely, 2^206243422101 is an apocalyptic number.

It is an amenable number.

206243422101 is a deficient number, since it is larger than the sum of its proper divisors (103668827499).

206243422101 is a wasteful number, since it uses less digits than its factorization.

206243422101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21946 (or 21940 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 206243422101 its reverse (101224342602), we get a palindrome (307467764703).

The spelling of 206243422101 in words is "two hundred six billion, two hundred forty-three million, four hundred twenty-two thousand, one hundred one".