2220400421420 has 12 divisors (see below), whose sum is σ = 4662840885024. Its totient is φ = 888160168560.

The previous prime is 2220400421357. The next prime is 2220400421443. The reversal of 2220400421420 is 241240040222.

It is a super-2 number, since 2×2220400421420² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 55510010516 + ... + 55510010555.

It is an arithmetic number, because the mean of its divisors is an integer number (388570073752).

Almost surely, 2^{2220400421420} is an apocalyptic number.

2220400421420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220400421420 is an abundant number, since it is smaller than the sum of its proper divisors (2442440463604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2220400421420 is a wasteful number, since it uses less digits than its factorization.

2220400421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111020021080 (or 111020021078 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 2220400421420 its reverse (241240040222), we get a palindrome (2461640461642).

The spelling of 2220400421420 in words is "two trillion, two hundred twenty billion, four hundred million, four hundred twenty-one thousand, four hundred twenty".