4040122021 has 8 divisors (see below), whose sum is σ = 4443473664. Its totient is φ = 3649995120.

The previous prime is 4040121991. The next prime is 4040122033. The reversal of 4040122021 is 1202210404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4040122021 - 2¹⁷ = 4039990949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4040121986 and 4040122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040122081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3305545 + ... + 3306766.

It is an arithmetic number, because the mean of its divisors is an integer number (555434208).

Almost surely, 2^4040122021 is an apocalyptic number.

It is an amenable number.

4040122021 is a deficient number, since it is larger than the sum of its proper divisors (403351643).

4040122021 is a wasteful number, since it uses less digits than its factorization.

4040122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612371.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4040122021 is about 63561.9541943134. The cubic root of 4040122021 is about 1592.6908828315.

Adding to 4040122021 its reverse (1202210404), we get a palindrome (5242332425).

The spelling of 4040122021 in words is "four billion, forty million, one hundred twenty-two thousand, twenty-one".