4220024212121 has 4 divisors (see below), whose sum is σ = 4220070080100. Its totient is φ = 4219978344144.

The previous prime is 4220024212111. The next prime is 4220024212231. The reversal of 4220024212121 is 1212124200224.

4220024212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3252828673600 + 967195538521 = 1803560^2 + 983461^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220024212121 - 2¹⁰ = 4220024211097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4220024212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22795706 + ... + 22980083.

It is an arithmetic number, because the mean of its divisors is an integer number (1055017520025).

Almost surely, 2^{4220024212121} is an apocalyptic number.

It is an amenable number.

4220024212121 is a deficient number, since it is larger than the sum of its proper divisors (45867979).

4220024212121 is an equidigital number, since it uses as much as digits as its factorization.

4220024212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45867978.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 4220024212121 its reverse (1212124200224), we get a palindrome (5432148412345).

The spelling of 4220024212121 in words is "four trillion, two hundred twenty billion, twenty-four million, two hundred twelve thousand, one hundred twenty-one".