40420401220321 has 16 divisors (see below), whose sum is σ = 40973509180800. Its totient is φ = 39868880008320.

The previous prime is 40420401220249. The next prime is 40420401220349. The reversal of 40420401220321 is 12302210402404.

It is a cyclic number.

It is not a de Polignac number, because 40420401220321 - 2²³ = 40420392831713 is a prime.

It is a super-3 number, since 3×40420401220321³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40420401220021) 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 15 ways as a sum of consecutive naturals, for example, 625351021 + ... + 625415653.

It is an arithmetic number, because the mean of its divisors is an integer number (2560844323800).

Almost surely, 2^{40420401220321} is an apocalyptic number.

It is an amenable number.

40420401220321 is a deficient number, since it is larger than the sum of its proper divisors (553107960479).

40420401220321 is a wasteful number, since it uses less digits than its factorization.

40420401220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76776.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40420401220321 its reverse (12302210402404), we get a palindrome (52722611622725).

The spelling of 40420401220321 in words is "forty trillion, four hundred twenty billion, four hundred one million, two hundred twenty thousand, three hundred twenty-one".