2021108104 has 32 divisors (see below), whose sum is σ = 4032915480. Its totient is φ = 946269184.

The previous prime is 2021108077. The next prime is 2021108119. The reversal of 2021108104 is 4018011202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1714788100 + 306320004 = 41410^2 + 17502^2 .

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, 10927 + ... + 64510.

Almost surely, 2^2021108104 is an apocalyptic number.

It is an amenable number.

2021108104 is a deficient number, since it is larger than the sum of its proper divisors (2011807376).

2021108104 is a wasteful number, since it uses less digits than its factorization.

2021108104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75657 (or 75653 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 2021108104 is about 44956.7359135425. The cubic root of 2021108104 is about 1264.3379714333.

Adding to 2021108104 its reverse (4018011202), we get a palindrome (6039119306).

The spelling of 2021108104 in words is "two billion, twenty-one million, one hundred eight thousand, one hundred four".