105072122 has 4 divisors (see below), whose sum is σ = 157608186. Its totient is φ = 52536060.

The previous prime is 105072101. The next prime is 105072151. The reversal of 105072122 is 221270501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221270501 = 47 ⋅4707883.

It can be written as a sum of positive squares in only one way, i.e., 94109401 + 10962721 = 9701^2 + 3311^2 .

It is a super-2 number, since 2×105072122² = 22080301643165768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105072094 and 105072103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26268029 + ... + 26268032.

Almost surely, 2^105072122 is an apocalyptic number.

105072122 is a deficient number, since it is larger than the sum of its proper divisors (52536064).

105072122 is an equidigital number, since it uses as much as digits as its factorization.

105072122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52536063.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 105072122 is about 10250.4693551076. The cubic root of 105072122 is about 471.8773890322.

The spelling of 105072122 in words is "one hundred five million, seventy-two thousand, one hundred twenty-two".