20111203055104 has 80 divisors (see below), whose sum is σ = 46258782739488. Its totient is φ = 8556173770752.

The previous prime is 20111203055017. The next prime is 20111203055107. The reversal of 20111203055104 is 40155030211102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111203055107) 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, 19988499 + ... + 20970514.

Almost surely, 2^{20111203055104} is an apocalyptic number.

It is an amenable number.

20111203055104 is an abundant number, since it is smaller than the sum of its proper divisors (26147579684384).

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

20111203055104 is an equidigital number, since it uses as much as digits as its factorization.

20111203055104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40959175 (or 40959159 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 20111203055104 its reverse (40155030211102), we get a palindrome (60266233266206).

The spelling of 20111203055104 in words is "twenty trillion, one hundred eleven billion, two hundred three million, fifty-five thousand, one hundred four".