4113522021 has 96 divisors (see below), whose sum is σ = 6904934400. Its totient is φ = 2165304960.

The previous prime is 4113521981. The next prime is 4113522071. The reversal of 4113522021 is 1202253114.

It is not a de Polignac number, because 4113522021 - 2¹⁴ = 4113505637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4113522071) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22726551 + ... + 22726731.

It is an arithmetic number, because the mean of its divisors is an integer number (71926400).

Almost surely, 2^4113522021 is an apocalyptic number.

It is an amenable number.

4113522021 is a deficient number, since it is larger than the sum of its proper divisors (2791412379).

4113522021 is a wasteful number, since it uses less digits than its factorization.

4113522021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 4113522021 is about 64136.7447022376. The cubic root of 4113522021 is about 1602.2782675469.

Adding to 4113522021 its reverse (1202253114), we get a palindrome (5315775135).

The spelling of 4113522021 in words is "four billion, one hundred thirteen million, five hundred twenty-two thousand, twenty-one".