2107321881 has 12 divisors (see below), whose sum is σ = 3268499472. Its totient is φ = 1204183848.

The previous prime is 2107321877. The next prime is 2107321883. The reversal of 2107321881 is 1881237012.

It is not a de Polignac number, because 2107321881 - 2² = 2107321877 is a prime.

It is a super-2 number, since 2×2107321881² = 8881611020282756322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2107321883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7167615 + ... + 7167908.

It is an arithmetic number, because the mean of its divisors is an integer number (272374956).

Almost surely, 2^2107321881 is an apocalyptic number.

2107321881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2107321881 is a deficient number, since it is larger than the sum of its proper divisors (1161177591).

2107321881 is a wasteful number, since it uses less digits than its factorization.

2107321881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14335540 (or 14335533 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 2107321881 is about 45905.5757070968. The cubic root of 2107321881 is about 1282.0657320048.

Adding to 2107321881 its reverse (1881237012), we get a palindrome (3988558893).

The spelling of 2107321881 in words is "two billion, one hundred seven million, three hundred twenty-one thousand, eight hundred eighty-one".