2021100124 has 6 divisors (see below), whose sum is σ = 3536925224. Its totient is φ = 1010550060.

The previous prime is 2021100121. The next prime is 2021100139. The reversal of 2021100124 is 4210011202.

It is a happy number.

It is a super-2 number, since 2×2021100124² = 8169691422465630752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021100121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252637512 + ... + 252637519.

Almost surely, 2^2021100124 is an apocalyptic number.

It is an amenable number.

2021100124 is a deficient number, since it is larger than the sum of its proper divisors (1515825100).

2021100124 is a wasteful number, since it uses less digits than its factorization.

2021100124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505275035 (or 505275033 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2021100124 is about 44956.6471614599. The cubic root of 2021100124 is about 1264.3363074236.

Adding to 2021100124 its reverse (4210011202), we get a palindrome (6231111326).

The spelling of 2021100124 in words is "two billion, twenty-one million, one hundred thousand, one hundred twenty-four".