20100212122211 has 8 divisors (see below), whose sum is σ = 22785665563920. Its totient is φ = 17577513434592.

The previous prime is 20100212122171. The next prime is 20100212122247. The reversal of 20100212122211 is 11222121200102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20100212122211 - 2²² = 20100207927907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20100212122211.

It is not an unprimeable number, because it can be changed into a prime (20100212122261) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 40688688260 + ... + 40688688753.

It is an arithmetic number, because the mean of its divisors is an integer number (2848208195490).

Almost surely, 2^{20100212122211} is an apocalyptic number.

20100212122211 is a deficient number, since it is larger than the sum of its proper divisors (2685453441709).

20100212122211 is a wasteful number, since it uses less digits than its factorization.

20100212122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81377377045.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20100212122211 its reverse (11222121200102), we get a palindrome (31322333322313).

The spelling of 20100212122211 in words is "twenty trillion, one hundred billion, two hundred twelve million, one hundred twenty-two thousand, two hundred eleven".