2021124007 has 4 divisors (see below), whose sum is σ = 2309856016. Its totient is φ = 1732392000.

The previous prime is 2021123981. The next prime is 2021124043. The reversal of 2021124007 is 7004211202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021124007 - 2²³ = 2012735399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021124097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144365994 + ... + 144366007.

It is an arithmetic number, because the mean of its divisors is an integer number (577464004).

Almost surely, 2^2021124007 is an apocalyptic number.

2021124007 is a deficient number, since it is larger than the sum of its proper divisors (288732009).

2021124007 is an equidigital number, since it uses as much as digits as its factorization.

2021124007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288732008.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 2021124007 is about 44956.9127832417. The cubic root of 2021124007 is about 1264.3412875538.

Adding to 2021124007 its reverse (7004211202), we get a palindrome (9025335209).

The spelling of 2021124007 in words is "two billion, twenty-one million, one hundred twenty-four thousand, seven".