2172055011 has 32 divisors (see below), whose sum is σ = 3335270400. Its totient is φ = 1231663104.

The previous prime is 2172055009. The next prime is 2172055013. The reversal of 2172055011 is 1105502712.

It is an interprime number because it is at equal distance from previous prime (2172055009) and next prime (2172055013).

It is not a de Polignac number, because 2172055011 - 2¹ = 2172055009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2172055013) 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, 2102151 + ... + 2103183.

It is an arithmetic number, because the mean of its divisors is an integer number (104227200).

Almost surely, 2^2172055011 is an apocalyptic number.

2172055011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2172055011 is a deficient number, since it is larger than the sum of its proper divisors (1163215389).

2172055011 is a wasteful number, since it uses less digits than its factorization.

2172055011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 2172055011 is about 46605.3109741798. The cubic root of 2172055011 is about 1295.0611442833.

Adding to 2172055011 its reverse (1105502712), we get a palindrome (3277557723).

The spelling of 2172055011 in words is "two billion, one hundred seventy-two million, fifty-five thousand, eleven".