20010011121100 has 216 divisors, whose sum is σ = 59341579114608. Its totient is φ = 5757125875200.

The previous prime is 20010011121073. The next prime is 20010011121101. The reversal of 20010011121100 is 112111001002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20010011121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13577887 + ... + 14979286.

It is an arithmetic number, because the mean of its divisors is an integer number (274729532938).

Almost surely, 2^{20010011121100} is an apocalyptic number.

20010011121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010011121100 is an abundant number, since it is smaller than the sum of its proper divisors (39331567993508).

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

20010011121100 is a wasteful number, since it uses less digits than its factorization.

20010011121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28557225 (or 28557211 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20010011121100 its reverse (112111001002), we get a palindrome (20122122122102).

The spelling of 20010011121100 in words is "twenty trillion, ten billion, eleven million, one hundred twenty-one thousand, one hundred".