3124100221 has 4 divisors (see below), whose sum is σ = 3408109344. Its totient is φ = 2840091100.

The previous prime is 3124100201. The next prime is 3124100233. The reversal of 3124100221 is 1220014213.

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 3124100221 - 2⁷ = 3124100093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3124100195 and 3124100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3124100201) 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, 142004545 + ... + 142004566.

It is an arithmetic number, because the mean of its divisors is an integer number (852027336).

Almost surely, 2^3124100221 is an apocalyptic number.

It is an amenable number.

3124100221 is a deficient number, since it is larger than the sum of its proper divisors (284009123).

3124100221 is a wasteful number, since it uses less digits than its factorization.

3124100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284009122.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3124100221 is about 55893.6509900722. The cubic root of 3124100221 is about 1461.8685372500.

Adding to 3124100221 its reverse (1220014213), we get a palindrome (4344114434).

The spelling of 3124100221 in words is "three billion, one hundred twenty-four million, one hundred thousand, two hundred twenty-one".