4024220121 has 48 divisors (see below), whose sum is σ = 6188769600. Its totient is φ = 2512705536.

The previous prime is 4024220113. The next prime is 4024220149. The reversal of 4024220121 is 1210224204.

4024220121 is a `hidden beast` number, since 402 + 42 + 201 + 21 = 666.

It is not a de Polignac number, because 4024220121 - 2³ = 4024220113 is a prime.

It is a super-2 number, since 2×4024220121² = 32388695164522509282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4024220094 and 4024220103.

It is not an unprimeable number, because it can be changed into a prime (4024220621) 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, 9838965 + ... + 9839373.

It is an arithmetic number, because the mean of its divisors is an integer number (128932700).

Almost surely, 2^4024220121 is an apocalyptic number.

It is an amenable number.

4024220121 is a deficient number, since it is larger than the sum of its proper divisors (2164549479).

4024220121 is a wasteful number, since it uses less digits than its factorization.

4024220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4024220121 is about 63436.7410969385. The cubic root of 4024220121 is about 1590.5985274849.

Adding to 4024220121 its reverse (1210224204), we get a palindrome (5234444325).

The spelling of 4024220121 in words is "four billion, twenty-four million, two hundred twenty thousand, one hundred twenty-one".