100121201212 has 6 divisors (see below), whose sum is σ = 175212102128. Its totient is φ = 50060600604.

The previous prime is 100121201209. The next prime is 100121201221. The reversal of 100121201212 is 212102121001.

It is a junction number, because it is equal to n+sod(n) for n = 100121201192 and 100121201201.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12515150148 + ... + 12515150155.

Almost surely, 2^100121201212 is an apocalyptic number.

It is an amenable number.

100121201212 is a deficient number, since it is larger than the sum of its proper divisors (75090900916).

100121201212 is a wasteful number, since it uses less digits than its factorization.

100121201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25030300307 (or 25030300305 counting only the distinct ones).

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

Adding to 100121201212 its reverse (212102121001), we get a palindrome (312223322213).

The spelling of 100121201212 in words is "one hundred billion, one hundred twenty-one million, two hundred one thousand, two hundred twelve".