2111006172 has 72 divisors (see below), whose sum is σ = 5699209600. Its totient is φ = 606022560.

The previous prime is 2111006159. The next prime is 2111006173. The reversal of 2111006172 is 2716001112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111006173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10672 + ... + 65847.

Almost surely, 2^2111006172 is an apocalyptic number.

2111006172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2111006172 is an abundant number, since it is smaller than the sum of its proper divisors (3588203428).

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

2111006172 is a wasteful number, since it uses less digits than its factorization.

2111006172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76567 (or 76554 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 2111006172 is about 45945.6871969503. The cubic root of 2111006172 is about 1282.8124543740.

Adding to 2111006172 its reverse (2716001112), we get a palindrome (4827007284).

The spelling of 2111006172 in words is "two billion, one hundred eleven million, six thousand, one hundred seventy-two".