12211211222100 has 180 divisors, whose sum is σ = 43182461333088. Its totient is φ = 2960293608000.

The previous prime is 12211211222087. The next prime is 12211211222149. The reversal of 12211211222100 is 122211211221.

12211211222100 is a `hidden beast` number, since 1 + 221 + 1 + 211 + 22 + 210 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a super-2 number, since 2×12211211222100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 68436216 + ... + 68614415.

Almost surely, 2^{12211211222100} is an apocalyptic number.

12211211222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211211222100 is an abundant number, since it is smaller than the sum of its proper divisors (30971250110988).

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

12211211222100 is a wasteful number, since it uses less digits than its factorization.

12211211222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137050668 (or 137050652 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12211211222100 its reverse (122211211221), we get a palindrome (12333422433321).

The spelling of 12211211222100 in words is "twelve trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty-two thousand, one hundred".