105712772122 has 4 divisors (see below), whose sum is σ = 158569158186. Its totient is φ = 52856386060.

The previous prime is 105712772119. The next prime is 105712772167. The reversal of 105712772122 is 221277217501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221277217501 = 23 ⋅9620748587.

It can be written as a sum of positive squares in only one way, i.e., 103407908041 + 2304864081 = 321571^2 + 48009^2 .

It is a super-2 number, since 2×105712772122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26428193029 + ... + 26428193032.

Almost surely, 2^105712772122 is an apocalyptic number.

105712772122 is a deficient number, since it is larger than the sum of its proper divisors (52856386064).

105712772122 is an equidigital number, since it uses as much as digits as its factorization.

105712772122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52856386063.

The product of its (nonzero) digits is 27440, while the sum is 37.

Adding to 105712772122 its reverse (221277217501), we get a palindrome (326989989623).

The spelling of 105712772122 in words is "one hundred five billion, seven hundred twelve million, seven hundred seventy-two thousand, one hundred twenty-two".