40821001321 has 8 divisors (see below), whose sum is σ = 41692521600. Its totient is φ = 39949605648.

The previous prime is 40821001313. The next prime is 40821001337. The reversal of 40821001321 is 12310012804.

It is a happy number.

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 40821001321 - 2³ = 40821001313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40821001292 and 40821001301.

It is not an unprimeable number, because it can be changed into a prime (40821001301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971455 + ... + 1012603.

It is an arithmetic number, because the mean of its divisors is an integer number (5211565200).

Almost surely, 2^40821001321 is an apocalyptic number.

It is an amenable number.

40821001321 is a deficient number, since it is larger than the sum of its proper divisors (871520279).

40821001321 is a wasteful number, since it uses less digits than its factorization.

40821001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62303.

The product of its (nonzero) digits is 384, while the sum is 22.

The spelling of 40821001321 in words is "forty billion, eight hundred twenty-one million, one thousand, three hundred twenty-one".