220404135412021 has 8 divisors (see below), whose sum is σ = 240515615746944. Its totient is φ = 200305111869120.

The previous prime is 220404135412009. The next prime is 220404135412081. The reversal of 220404135412021 is 120214531404022.

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 220404135412021 - 2⁴³ = 211608042389813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220404135412001) 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, 3114161005 + ... + 3114231778.

It is an arithmetic number, because the mean of its divisors is an integer number (30064451968368).

Almost surely, 2^{220404135412021} is an apocalyptic number.

It is an amenable number.

220404135412021 is a deficient number, since it is larger than the sum of its proper divisors (20111480334923).

220404135412021 is a wasteful number, since it uses less digits than its factorization.

220404135412021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228396011.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 220404135412021 its reverse (120214531404022), we get a palindrome (340618666816043).

The spelling of 220404135412021 in words is "two hundred twenty trillion, four hundred four billion, one hundred thirty-five million, four hundred twelve thousand, twenty-one".