20100102212 has 12 divisors (see below), whose sum is σ = 35176182720. Its totient is φ = 10049764296.

The previous prime is 20100102199. The next prime is 20100102221. The reversal of 20100102212 is 21220100102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20100102193 and 20100102202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202433 + ... + 284919.

It is an arithmetic number, because the mean of its divisors is an integer number (2931348560).

Almost surely, 2^20100102212 is an apocalyptic number.

It is an amenable number.

20100102212 is a deficient number, since it is larger than the sum of its proper divisors (15076080508).

20100102212 is a wasteful number, since it uses less digits than its factorization.

20100102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143410 (or 143408 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100102212 its reverse (21220100102), we get a palindrome (41320202314).

It can be divided in two parts, 20100102 and 212, that multiplied together give a palindrome (4261221624).

The spelling of 20100102212 in words is "twenty billion, one hundred million, one hundred two thousand, two hundred twelve".