2122258 has 4 divisors (see below), whose sum is σ = 3183390. Its totient is φ = 1061128.

The previous prime is 2122231. The next prime is 2122259. The reversal of 2122258 is 8522212.

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., 1225449 + 896809 = 1107^2 + 947^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2⁸ + 1 + 2¹⁰ + 2¹³ + 2²¹ + 5⁶ + 8 .

It is not an unprimeable number, because it can be changed into a prime (2122259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530563 + ... + 530566.

2^2122258 is an apocalyptic number.

2122258 is a deficient number, since it is larger than the sum of its proper divisors (1061132).

2122258 is a wasteful number, since it uses less digits than its factorization.

2122258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061131.

The product of its digits is 640, while the sum is 22.

The square root of 2122258 is about 1456.7971718808. The cubic root of 2122258 is about 128.5087580520.

The spelling of 2122258 in words is "two million, one hundred twenty-two thousand, two hundred fifty-eight".