100011212212 has 48 divisors (see below), whose sum is σ = 180772264512. Its totient is φ = 48389918720.

The previous prime is 100011212201. The next prime is 100011212243. The reversal of 100011212212 is 212212110001.

It is a super-2 number, since 2×100011212212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100011212192 and 100011212201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11274603 + ... + 11283469.

It is an arithmetic number, because the mean of its divisors is an integer number (3766088844).

Almost surely, 2^100011212212 is an apocalyptic number.

It is an amenable number.

100011212212 is a deficient number, since it is larger than the sum of its proper divisors (80761052300).

100011212212 is a wasteful number, since it uses less digits than its factorization.

100011212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9648 (or 9646 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100011212212 its reverse (212212110001), we get a palindrome (312223322213).

The spelling of 100011212212 in words is "one hundred billion, eleven million, two hundred twelve thousand, two hundred twelve".