106206502221 has 6 divisors (see below), whose sum is σ = 153409392110. Its totient is φ = 70804334808.

The previous prime is 106206502183. The next prime is 106206502223. The reversal of 106206502221 is 122205602601.

106206502221 is a `hidden beast` number, since 1 + 0 + 6 + 2 + 0 + 650 + 2 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 92103752196 + 14102750025 = 303486^2 + 118755^2 .

It is not a de Polignac number, because 106206502221 - 2⁷ = 106206502093 is a prime.

It is a super-2 number, since 2×106206502221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106206502223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5900361226 + ... + 5900361243.

Almost surely, 2^106206502221 is an apocalyptic number.

It is an amenable number.

106206502221 is a deficient number, since it is larger than the sum of its proper divisors (47202889889).

106206502221 is a wasteful number, since it uses less digits than its factorization.

106206502221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11800722475 (or 11800722472 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 106206502221 in words is "one hundred six billion, two hundred six million, five hundred two thousand, two hundred twenty-one".