201215611106 has 16 divisors (see below), whose sum is σ = 320191156440. Its totient is φ = 94507944960.

The previous prime is 201215611087. The next prime is 201215611117. The reversal of 201215611106 is 601116512102.

It can be written as a sum of positive squares in 4 ways, for example, as 131485286881 + 69730324225 = 362609^2 + 264065^2 .

It is a super-2 number, since 2×201215611106² (a number of 23 digits) contains 22 as substring.

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, 5661851 + ... + 5697278.

Almost surely, 2^201215611106 is an apocalyptic number.

201215611106 is a deficient number, since it is larger than the sum of its proper divisors (118975545334).

201215611106 is a wasteful number, since it uses less digits than its factorization.

201215611106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11359669.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 201215611106 in words is "two hundred one billion, two hundred fifteen million, six hundred eleven thousand, one hundred six".