2101321040 has 160 divisors (see below), whose sum is σ = 6367092480. Its totient is φ = 625876992.

The previous prime is 2101321037. The next prime is 2101321069. The reversal of 2101321040 is 401231012.

It is a super-2 number, since 2×2101321040² = 8831100226293363200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115271 + ... + 132249.

It is an arithmetic number, because the mean of its divisors is an integer number (39794328).

Almost surely, 2^2101321040 is an apocalyptic number.

2101321040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101321040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3183546240).

2101321040 is an abundant number, since it is smaller than the sum of its proper divisors (4265771440).

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

2101321040 is a wasteful number, since it uses less digits than its factorization.

2101321040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17029 (or 17023 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2101321040 is about 45840.1684115580. The cubic root of 2101321040 is about 1280.8476319231.

Adding to 2101321040 its reverse (401231012), we get a palindrome (2502552052).

The spelling of 2101321040 in words is "two billion, one hundred one million, three hundred twenty-one thousand, forty".