43102030221 has 6 divisors (see below), whose sum is σ = 62258488110. Its totient is φ = 28734686808.

The previous prime is 43102030193. The next prime is 43102030241. The reversal of 43102030221 is 12203020134.

It can be written as a sum of positive squares in only one way, i.e., 33719976900 + 9382053321 = 183630^2 + 96861^2 .

It is not a de Polignac number, because 43102030221 - 2⁷ = 43102030093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43102030194 and 43102030203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43102030241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2394557226 + ... + 2394557243.

It is an arithmetic number, because the mean of its divisors is an integer number (10376414685).

Almost surely, 2^43102030221 is an apocalyptic number.

It is an amenable number.

43102030221 is a deficient number, since it is larger than the sum of its proper divisors (19156457889).

43102030221 is a wasteful number, since it uses less digits than its factorization.

43102030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789114475 (or 4789114472 counting only the distinct ones).

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

Adding to 43102030221 its reverse (12203020134), we get a palindrome (55305050355).

The spelling of 43102030221 in words is "forty-three billion, one hundred two million, thirty thousand, two hundred twenty-one".