20111202111122 has 16 divisors (see below), whose sum is σ = 31768537076640. Its totient is φ = 9522156666528.

The previous prime is 20111202111097. The next prime is 20111202111139. The reversal of 20111202111122 is 22111120211102.

It is a self number, because there is not a number n which added to its sum of digits gives 20111202111122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116641283 + ... + 116813574.

It is an arithmetic number, because the mean of its divisors is an integer number (1985533567290).

Almost surely, 2^{20111202111122} is an apocalyptic number.

20111202111122 is a deficient number, since it is larger than the sum of its proper divisors (11657334965518).

20111202111122 is a wasteful number, since it uses less digits than its factorization.

20111202111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233457145.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20111202111122 its reverse (22111120211102), we get a palindrome (42222322322224).

The spelling of 20111202111122 in words is "twenty trillion, one hundred eleven billion, two hundred two million, one hundred eleven thousand, one hundred twenty-two".