2171099136 has 96 divisors (see below), whose sum is σ = 5975424000. Its totient is φ = 700293120.

The previous prime is 2171099113. The next prime is 2171099141. The reversal of 2171099136 is 6319901712.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 2171099094 and 2171099103.

It is a congruent number.

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, 184765 + ... + 196163.

It is an arithmetic number, because the mean of its divisors is an integer number (62244000).

Almost surely, 2^2171099136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2171099136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2987712000).

2171099136 is an abundant number, since it is smaller than the sum of its proper divisors (3804324864).

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

2171099136 is a wasteful number, since it uses less digits than its factorization.

2171099136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11455 (or 11435 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 2171099136 is about 46595.0548449082. The cubic root of 2171099136 is about 1294.8711401623.

The spelling of 2171099136 in words is "two billion, one hundred seventy-one million, ninety-nine thousand, one hundred thirty-six".