1212210212211 has 6 divisors (see below), whose sum is σ = 1750970306540. Its totient is φ = 808140141468.

The previous prime is 1212210212189. The next prime is 1212210212231. The reversal of 1212210212211 is 1122120122121.

1212210212211 is a `hidden beast` number, since 1 + 21 + 221 + 0 + 212 + 211 = 666.

It is not a de Polignac number, because 1212210212211 - 2²² = 1212206017907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212210212231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67345011781 + ... + 67345011798.

Almost surely, 2^{1212210212211} is an apocalyptic number.

1212210212211 is a deficient number, since it is larger than the sum of its proper divisors (538760094329).

1212210212211 is a wasteful number, since it uses less digits than its factorization.

1212210212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134690023585 (or 134690023582 counting only the distinct ones).

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

Adding to 1212210212211 its reverse (1122120122121), we get a palindrome (2334330334332).

The spelling of 1212210212211 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twelve thousand, two hundred eleven".