100111211201020 has 12 divisors (see below), whose sum is σ = 210233543522184. Its totient is φ = 40044484480400.

The previous prime is 100111211200963. The next prime is 100111211201021. The reversal of 100111211201020 is 20102112111001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111211201021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2502780280006 + ... + 2502780280045.

It is an arithmetic number, because the mean of its divisors is an integer number (17519461960182).

Almost surely, 2^{100111211201020} is an apocalyptic number.

100111211201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100111211201020 is an abundant number, since it is smaller than the sum of its proper divisors (110122332321164).

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

100111211201020 is a wasteful number, since it uses less digits than its factorization.

100111211201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005560560060 (or 5005560560058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100111211201020 its reverse (20102112111001), we get a palindrome (120213323312021).

The spelling of 100111211201020 in words is "one hundred trillion, one hundred eleven billion, two hundred eleven million, two hundred one thousand, twenty".