2120121212211 has 48 divisors (see below), whose sum is σ = 3330525916224. Its totient is φ = 1294182254592.

The previous prime is 2120121212201. The next prime is 2120121212213. The reversal of 2120121212211 is 1122121210212.

2120121212211 is a `hidden beast` number, since 2 + 120 + 121 + 212 + 211 = 666.

It is not a de Polignac number, because 2120121212211 - 2³⁰ = 2119047470387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120121212213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89245111 + ... + 89268863.

It is an arithmetic number, because the mean of its divisors is an integer number (69385956588).

Almost surely, 2^{2120121212211} is an apocalyptic number.

2120121212211 is a deficient number, since it is larger than the sum of its proper divisors (1210404704013).

2120121212211 is a wasteful number, since it uses less digits than its factorization.

2120121212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39580 (or 39577 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2120121212211 its reverse (1122121210212), we get a palindrome (3242242422423).

It can be divided in two parts, 2120121 and 212211, that added together give a palindrome (2332332).

The spelling of 2120121212211 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, two hundred eleven".