7212115 has 16 divisors (see below), whose sum is σ = 9223200. Its totient is φ = 5398272.

The previous prime is 7212083. The next prime is 7212157. The reversal of 7212115 is 5112127.

It is a cyclic number.

It is not a de Polignac number, because 7212115 - 2⁵ = 7212083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

7212115 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7212092 and 7212101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8029 + ... + 8881.

It is an arithmetic number, because the mean of its divisors is an integer number (576450).

Almost surely, 2^7212115 is an apocalyptic number.

7212115 is a deficient number, since it is larger than the sum of its proper divisors (2011085).

7212115 is a wasteful number, since it uses less digits than its factorization.

7212115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966.

The product of its digits is 140, while the sum is 19.

The square root of 7212115 is about 2685.5381211221. The cubic root of 7212115 is about 193.2061208977.

The spelling of 7212115 in words is "seven million, two hundred twelve thousand, one hundred fifteen".