2122215 has 8 divisors (see below), whose sum is σ = 3395568. Its totient is φ = 1131840.

The previous prime is 2122213. The next prime is 2122231. The reversal of 2122215 is 5122212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2122215 - 2¹ = 2122213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 141481 = 2122215 / (2 + 1 + 2 + 2 + 2 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 2122194 and 2122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70726 + ... + 70755.

It is an arithmetic number, because the mean of its divisors is an integer number (424446).

2^2122215 is an apocalyptic number.

2122215 is a deficient number, since it is larger than the sum of its proper divisors (1273353).

2122215 is a wasteful number, since it uses less digits than its factorization.

2122215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141489.

The product of its digits is 80, while the sum is 15.

The square root of 2122215 is about 1456.7824134029. The cubic root of 2122215 is about 128.5078901220.

Adding to 2122215 its reverse (5122212), we get a palindrome (7244427).

It can be divided in two parts, 212221 and 5, that added together give a triangular number (212226 = T₆₅₁).

The spelling of 2122215 in words is "two million, one hundred twenty-two thousand, two hundred fifteen".