1212211202211 has 32 divisors (see below), whose sum is σ = 1838494136640. Its totient is φ = 789178464000.

The previous prime is 1212211202141. The next prime is 1212211202231. The reversal of 1212211202211 is 1122021122121.

1212211202211 is a `hidden beast` number, since 1 + 212 + 211 + 20 + 221 + 1 = 666.

It is not a de Polignac number, because 1212211202211 - 2⁹ = 1212211201699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212211202231) 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 31 ways as a sum of consecutive naturals, for example, 2845600 + ... + 3243741.

It is an arithmetic number, because the mean of its divisors is an integer number (57452941770).

Almost surely, 2^{1212211202211} is an apocalyptic number.

1212211202211 is a deficient number, since it is larger than the sum of its proper divisors (626282934429).

1212211202211 is a wasteful number, since it uses less digits than its factorization.

1212211202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089524 (or 6089518 counting only the distinct ones).

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

Adding to 1212211202211 its reverse (1122021122121), we get a palindrome (2334232324332).

The spelling of 1212211202211 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred two thousand, two hundred eleven".