7212151 has 8 divisors (see below), whose sum is σ = 7440704. Its totient is φ = 6985440.

The previous prime is 7212083. The next prime is 7212157. The reversal of 7212151 is 1512127.

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

It is a cyclic number.

It is not a de Polignac number, because 7212151 - 2⁹ = 7211639 is a prime.

It is a Duffinian number.

7212151 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15346 + ... + 15808.

It is an arithmetic number, because the mean of its divisors is an integer number (930088).

Almost surely, 2^7212151 is an apocalyptic number.

7212151 is the 1551-st hex number.

7212151 is a deficient number, since it is larger than the sum of its proper divisors (228553).

7212151 is a wasteful number, since it uses less digits than its factorization.

7212151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921.

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

The square root of 7212151 is about 2685.5448236810. The cubic root of 7212151 is about 193.2064423664.

Adding to 7212151 its reverse (1512127), we get a palindrome (8724278).

The spelling of 7212151 in words is "seven million, two hundred twelve thousand, one hundred fifty-one".