4221106 has 4 divisors (see below), whose sum is σ = 6331662. Its totient is φ = 2110552.

The previous prime is 4221047. The next prime is 4221109. The reversal of 4221106 is 6011224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3980025 + 241081 = 1995^2 + 491^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4221106.

It is not an unprimeable number, because it can be changed into a prime (4221109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055275 + ... + 1055278.

Almost surely, 2^4221106 is an apocalyptic number.

4221106 is a deficient number, since it is larger than the sum of its proper divisors (2110556).

4221106 is a wasteful number, since it uses less digits than its factorization.

4221106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110555.

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

The square root of 4221106 is about 2054.5330369697. The cubic root of 4221106 is about 161.6126752548.

The spelling of 4221106 in words is "four million, two hundred twenty-one thousand, one hundred six".