220421014021 has 32 divisors (see below), whose sum is σ = 250169472000. Its totient is φ = 192790540800.

The previous prime is 220421014001. The next prime is 220421014043. The reversal of 220421014021 is 120410124022.

It is not a de Polignac number, because 220421014021 - 2³¹ = 218273530373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220421014021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220421014001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10647801 + ... + 10668481.

It is an arithmetic number, because the mean of its divisors is an integer number (7817796000).

Almost surely, 2^220421014021 is an apocalyptic number.

It is an amenable number.

220421014021 is a deficient number, since it is larger than the sum of its proper divisors (29748457979).

220421014021 is a wasteful number, since it uses less digits than its factorization.

220421014021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21277.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220421014021 its reverse (120410124022), we get a palindrome (340831138043).

The spelling of 220421014021 in words is "two hundred twenty billion, four hundred twenty-one million, fourteen thousand, twenty-one".