11212172106 has 32 divisors (see below), whose sum is σ = 22717774080. Its totient is φ = 3688763904.

The previous prime is 11212172093. The next prime is 11212172131. The reversal of 11212172106 is 60127121211.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127446 + ... + 196638.

It is an arithmetic number, because the mean of its divisors is an integer number (709930440).

Almost surely, 2^11212172106 is an apocalyptic number.

11212172106 is an abundant number, since it is smaller than the sum of its proper divisors (11505601974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11212172106 is a wasteful number, since it uses less digits than its factorization.

11212172106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69550.

The product of its (nonzero) digits is 336, while the sum is 24.

Adding to 11212172106 its reverse (60127121211), we get a palindrome (71339293317).

The spelling of 11212172106 in words is "eleven billion, two hundred twelve million, one hundred seventy-two thousand, one hundred six".