2102001320 has 16 divisors (see below), whose sum is σ = 4729503060. Its totient is φ = 840800512.

The previous prime is 2102001313. The next prime is 2102001353. The reversal of 2102001320 is 231002012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2006860804 + 95140516 = 44798^2 + 9754^2 .

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 3 ways as a sum of consecutive naturals, for example, 26274977 + ... + 26275056.

Almost surely, 2^2102001320 is an apocalyptic number.

2102001320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102001320 is an abundant number, since it is smaller than the sum of its proper divisors (2627501740).

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

2102001320 is a wasteful number, since it uses less digits than its factorization.

2102001320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52550044 (or 52550040 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2102001320 is about 45847.5879409157. The cubic root of 2102001320 is about 1280.9858372074.

Adding to 2102001320 its reverse (231002012), we get a palindrome (2333003332).

The spelling of 2102001320 in words is "two billion, one hundred two million, one thousand, three hundred twenty".