2101320016 has 20 divisors (see below), whose sum is σ = 4084408224. Its totient is φ = 1047279200.

The previous prime is 2101319999. The next prime is 2101320017. The reversal of 2101320016 is 6100231012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101320017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206170 + ... + 216121.

Almost surely, 2^2101320016 is an apocalyptic number.

It is an amenable number.

2101320016 is a deficient number, since it is larger than the sum of its proper divisors (1983088208).

2101320016 is a wasteful number, since it uses less digits than its factorization.

2101320016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422610 (or 422604 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2101320016 is about 45840.1572423132. The cubic root of 2101320016 is about 1280.8474238653.

Adding to 2101320016 its reverse (6100231012), we get a palindrome (8201551028).

The spelling of 2101320016 in words is "two billion, one hundred one million, three hundred twenty thousand, sixteen".