40333121221 has 4 divisors (see below), whose sum is σ = 40387406112. Its totient is φ = 40278836332.

The previous prime is 40333121201. The next prime is 40333121263. The reversal of 40333121221 is 12212133304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40333121221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40333121192 and 40333121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40333121201) 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, 27141331 + ... + 27142816.

It is an arithmetic number, because the mean of its divisors is an integer number (10096851528).

Almost surely, 2^40333121221 is an apocalyptic number.

It is an amenable number.

40333121221 is a deficient number, since it is larger than the sum of its proper divisors (54284891).

40333121221 is an equidigital number, since it uses as much as digits as its factorization.

40333121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54284890.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 40333121221 its reverse (12212133304), we get a palindrome (52545254525).

The spelling of 40333121221 in words is "forty billion, three hundred thirty-three million, one hundred twenty-one thousand, two hundred twenty-one".