100210121212 has 24 divisors (see below), whose sum is σ = 178735183200. Its totient is φ = 49143546816.

The previous prime is 100210121203. The next prime is 100210121257. The reversal of 100210121212 is 212121012001.

It is a junction number, because it is equal to n+sod(n) for n = 100210121192 and 100210121201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583089 + ... + 735127.

It is an arithmetic number, because the mean of its divisors is an integer number (7447299300).

Almost surely, 2^100210121212 is an apocalyptic number.

It is an amenable number.

100210121212 is a deficient number, since it is larger than the sum of its proper divisors (78525061988).

100210121212 is a wasteful number, since it uses less digits than its factorization.

100210121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155205 (or 155203 counting only the distinct ones).

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

Adding to 100210121212 its reverse (212121012001), we get a palindrome (312331133213).

The spelling of 100210121212 in words is "one hundred billion, two hundred ten million, one hundred twenty-one thousand, two hundred twelve".