20111210110122 has 32 divisors (see below), whose sum is σ = 42340920851520. Its totient is φ = 6350678784000.

The previous prime is 20111210110097. The next prime is 20111210110129. The reversal of 20111210110122 is 22101101211102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20111210110129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9879 + ... + 6342122.

It is an arithmetic number, because the mean of its divisors is an integer number (1323153776610).

Almost surely, 2^{20111210110122} is an apocalyptic number.

20111210110122 is an abundant number, since it is smaller than the sum of its proper divisors (22229710741398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111210110122 is a wasteful number, since it uses less digits than its factorization.

20111210110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6379798.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111210110122 its reverse (22101101211102), we get a palindrome (42212311321224).

The spelling of 20111210110122 in words is "twenty trillion, one hundred eleven billion, two hundred ten million, one hundred ten thousand, one hundred twenty-two".