12101012122 has 4 divisors (see below), whose sum is σ = 18151518186. Its totient is φ = 6050506060.

The previous prime is 12101012113. The next prime is 12101012129. The reversal of 12101012122 is 22121010121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8114226241 + 3986785881 = 90079^2 + 63141^2 .

It is not an unprimeable number, because it can be changed into a prime (12101012129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3025253029 + ... + 3025253032.

Almost surely, 2^12101012122 is an apocalyptic number.

12101012122 is a deficient number, since it is larger than the sum of its proper divisors (6050506064).

12101012122 is an equidigital number, since it uses as much as digits as its factorization.

12101012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6050506063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12101012122 its reverse (22121010121), we get a palindrome (34222022243).

It can be divided in two parts, 121010121 and 22, that multiplied together give a palindrome (2662222662).

The spelling of 12101012122 in words is "twelve billion, one hundred one million, twelve thousand, one hundred twenty-two".