4212132221 has 4 divisors (see below), whose sum is σ = 4595053344. Its totient is φ = 3829211100.

The previous prime is 4212132217. The next prime is 4212132233. The reversal of 4212132221 is 1222312124.

4212132221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4212132221 - 2² = 4212132217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4212132193 and 4212132202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4212132241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191460545 + ... + 191460566.

It is an arithmetic number, because the mean of its divisors is an integer number (1148763336).

Almost surely, 2^4212132221 is an apocalyptic number.

It is an amenable number.

4212132221 is a deficient number, since it is larger than the sum of its proper divisors (382921123).

4212132221 is a wasteful number, since it uses less digits than its factorization.

4212132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382921122.

The product of its digits is 384, while the sum is 20.

The square root of 4212132221 is about 64900.9416033389. The cubic root of 4212132221 is about 1614.9806821615.

Adding to 4212132221 its reverse (1222312124), we get a palindrome (5434444345).

The spelling of 4212132221 in words is "four billion, two hundred twelve million, one hundred thirty-two thousand, two hundred twenty-one".