100002120212 has 12 divisors (see below), whose sum is σ = 175021914900. Its totient is φ = 49995858816.

The previous prime is 100002120193. The next prime is 100002120241. The reversal of 100002120212 is 212021200001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63602822416 + 36399297796 = 252196^2 + 190786^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100002120193 and 100002120202.

It is a congruent number.

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, 1256903 + ... + 1334094.

It is an arithmetic number, because the mean of its divisors is an integer number (14585159575).

Almost surely, 2^100002120212 is an apocalyptic number.

It is an amenable number.

100002120212 is a deficient number, since it is larger than the sum of its proper divisors (75019794688).

100002120212 is a wasteful number, since it uses less digits than its factorization.

100002120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600650 (or 2600648 counting only the distinct ones).

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

Adding to 100002120212 its reverse (212021200001), we get a palindrome (312023320213).

The spelling of 100002120212 in words is "one hundred billion, two million, one hundred twenty thousand, two hundred twelve".