82151122 has 8 divisors (see below), whose sum is σ = 123495372. Its totient is φ = 40986000.

The previous prime is 82151119. The next prime is 82151129. The reversal of 82151122 is 22115128.

It can be written as a sum of positive squares in 2 ways, for example, as 69039481 + 13111641 = 8309^2 + 3621^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 82151093 and 82151102.

It is not an unprimeable number, because it can be changed into a prime (82151129) 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 3 ways as a sum of consecutive naturals, for example, 43629 + ... + 45472.

Almost surely, 2^82151122 is an apocalyptic number.

82151122 is a deficient number, since it is larger than the sum of its proper divisors (41344250).

82151122 is a wasteful number, since it uses less digits than its factorization.

82151122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89564.

The product of its digits is 320, while the sum is 22.

The square root of 82151122 is about 9063.7256136756. The cubic root of 82151122 is about 434.7148737052.

The spelling of 82151122 in words is "eighty-two million, one hundred fifty-one thousand, one hundred twenty-two".