20111111200122 has 16 divisors (see below), whose sum is σ = 40222267309632. Its totient is φ = 6703696248480.

The previous prime is 20111111200051. The next prime is 20111111200127. The reversal of 20111111200122 is 22100211111102.

It is a happy number.

It is a super-2 number, since 2×20111111200122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20111111200127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7777422 + ... + 10035462.

It is an arithmetic number, because the mean of its divisors is an integer number (2513891706852).

Almost surely, 2^{20111111200122} is an apocalyptic number.

20111111200122 is an abundant number, since it is smaller than the sum of its proper divisors (20111156109510).

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

20111111200122 is a wasteful number, since it uses less digits than its factorization.

20111111200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742453.

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

Adding to 20111111200122 its reverse (22100211111102), we get a palindrome (42211322311224).

The spelling of 20111111200122 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, two hundred thousand, one hundred twenty-two".