4202221121 has 8 divisors (see below), whose sum is σ = 4820262144. Its totient is φ = 3588611040.

The previous prime is 4202221117. The next prime is 4202221147. The reversal of 4202221121 is 1211222024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4202221121 - 2² = 4202221117 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 4202221121.

It is not an unprimeable number, because it can be changed into a prime (4202221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105700 + ... + 1109493.

It is an arithmetic number, because the mean of its divisors is an integer number (602532768).

Almost surely, 2^4202221121 is an apocalyptic number.

It is an amenable number.

4202221121 is a deficient number, since it is larger than the sum of its proper divisors (618041023).

4202221121 is a wasteful number, since it uses less digits than its factorization.

4202221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215471.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 4202221121 is about 64824.5410396402. The cubic root of 4202221121 is about 1613.7130102082.

Adding to 4202221121 its reverse (1211222024), we get a palindrome (5413443145).

The spelling of 4202221121 in words is "four billion, two hundred two million, two hundred twenty-one thousand, one hundred twenty-one".