40020101021 has 8 divisors (see below), whose sum is σ = 40063577088. Its totient is φ = 39976650000.

The previous prime is 40020100999. The next prime is 40020101027. The reversal of 40020101021 is 12010102004.

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 40020101021 - 2¹⁸ = 40019838877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40020100993 and 40020101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40020101027) 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 in 7 ways as a sum of consecutive naturals, for example, 5440496 + ... + 5447846.

It is an arithmetic number, because the mean of its divisors is an integer number (5007947136).

Almost surely, 2^40020101021 is an apocalyptic number.

It is an amenable number.

40020101021 is a deficient number, since it is larger than the sum of its proper divisors (43476067).

40020101021 is a wasteful number, since it uses less digits than its factorization.

40020101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12523.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 40020101021 its reverse (12010102004), we get a palindrome (52030203025).

The spelling of 40020101021 in words is "forty billion, twenty million, one hundred one thousand, twenty-one".