4033220121 has 40 divisors (see below), whose sum is σ = 6897162624. Its totient is φ = 2300840640.

The previous prime is 4033220111. The next prime is 4033220123. The reversal of 4033220121 is 1210223304.

It is not a de Polignac number, because 4033220121 - 2⁵ = 4033220089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4033220094 and 4033220103.

It is not an unprimeable number, because it can be changed into a prime (4033220123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 352141 + ... + 363413.

Almost surely, 2^4033220121 is an apocalyptic number.

It is an amenable number.

4033220121 is a deficient number, since it is larger than the sum of its proper divisors (2863942503).

4033220121 is a wasteful number, since it uses less digits than its factorization.

4033220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11923 (or 11914 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4033220121 is about 63507.6382886342. The cubic root of 4033220121 is about 1591.7834136356.

Adding to 4033220121 its reverse (1210223304), we get a palindrome (5243443425).

The spelling of 4033220121 in words is "four billion, thirty-three million, two hundred twenty thousand, one hundred twenty-one".