4421120121 has 48 divisors (see below), whose sum is σ = 7321554240. Its totient is φ = 2546328960.

The previous prime is 4421120117. The next prime is 4421120131. The reversal of 4421120121 is 1210211244.

4421120121 is a `hidden beast` number, since 4 + 421 + 120 + 121 = 666.

It is not a de Polignac number, because 4421120121 - 2² = 4421120117 is a prime.

It is a super-2 number, since 2×4421120121² = 39092606248622109282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4421120094 and 4421120103.

It is not an unprimeable number, because it can be changed into a prime (4421120131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143475 + ... + 171543.

It is an arithmetic number, because the mean of its divisors is an integer number (152532380).

Almost surely, 2^4421120121 is an apocalyptic number.

It is an amenable number.

4421120121 is a deficient number, since it is larger than the sum of its proper divisors (2900434119).

4421120121 is a wasteful number, since it uses less digits than its factorization.

4421120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28166 (or 28163 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 4421120121 is about 66491.5041264672. The cubic root of 4421120121 is about 1641.2602004661.

Adding to 4421120121 its reverse (1210211244), we get a palindrome (5631331365).

The spelling of 4421120121 in words is "four billion, four hundred twenty-one million, one hundred twenty thousand, one hundred twenty-one".