12211121112100 has 36 divisors (see below), whose sum is σ = 26503618882048. Its totient is φ = 4883437188000.

The previous prime is 12211121112053. The next prime is 12211121112107. The reversal of 12211121112100 is 121112111221.

It is a super-2 number, since 2×12211121112100² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211121112107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12155196 + ... + 13121395.

Almost surely, 2^{12211121112100} is an apocalyptic number.

12211121112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211121112100 is an abundant number, since it is smaller than the sum of its proper divisors (14292497769948).

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

12211121112100 is a wasteful number, since it uses less digits than its factorization.

12211121112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25281436 (or 25281429 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12211121112100 its reverse (121112111221), we get a palindrome (12332233223321).

The spelling of 12211121112100 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, one hundred twelve thousand, one hundred".