201111101220100 has 36 divisors (see below), whose sum is σ = 436673513995264. Its totient is φ = 80396067336480.

The previous prime is 201111101220061. The next prime is 201111101220103. The reversal of 201111101220100 is 1022101111102.

It is a happy number.

It is a super-2 number, since 2×201111101220100² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201111101220103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 604497264 + ... + 604829863.

Almost surely, 2^{201111101220100} is an apocalyptic number.

201111101220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111101220100 is an abundant number, since it is smaller than the sum of its proper divisors (235562412775164).

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

201111101220100 is a wasteful number, since it uses less digits than its factorization.

201111101220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209328804 (or 1209328797 counting only the distinct ones).

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

Adding to 201111101220100 its reverse (1022101111102), we get a palindrome (202133202331202).

The spelling of 201111101220100 in words is "two hundred one trillion, one hundred eleven billion, one hundred one million, two hundred twenty thousand, one hundred".