4020021104420 has 24 divisors (see below), whose sum is σ = 8442090518400. Its totient is φ = 1607999641952.

The previous prime is 4020021104419. The next prime is 4020021104423. The reversal of 4020021104420 is 244011200204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4020021104392 and 4020021104401.

It is not an unprimeable number, because it can be changed into a prime (4020021104423) 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, 4194101 + ... + 5062659.

It is an arithmetic number, because the mean of its divisors is an integer number (351753771600).

Almost surely, 2^{4020021104420} is an apocalyptic number.

It is an amenable number.

4020021104420 is an abundant number, since it is smaller than the sum of its proper divisors (4422069413980).

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

4020021104420 is a wasteful number, since it uses less digits than its factorization.

4020021104420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099987 (or 1099985 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 4020021104420 its reverse (244011200204), we get a palindrome (4264032304624).

The spelling of 4020021104420 in words is "four trillion, twenty billion, twenty-one million, one hundred four thousand, four hundred twenty".