1212202111211 has 16 divisors (see below), whose sum is σ = 1501954104000. Its totient is φ = 952668010368.

The previous prime is 1212202111199. The next prime is 1212202111247. The reversal of 1212202111211 is 1121112022121.

It is a cyclic number.

It is not a de Polignac number, because 1212202111211 - 2¹⁴ = 1212202094827 is a prime.

It is a super-2 number, since 2×1212202111211² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212202111211.

It is not an unprimeable number, because it can be changed into a prime (1212202111271) 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 15 ways as a sum of consecutive naturals, for example, 44687456 + ... + 44714573.

It is an arithmetic number, because the mean of its divisors is an integer number (93872131500).

Almost surely, 2^{1212202111211} is an apocalyptic number.

1212202111211 is a deficient number, since it is larger than the sum of its proper divisors (289751992789).

1212202111211 is a wasteful number, since it uses less digits than its factorization.

1212202111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89402198.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1212202111211 its reverse (1121112022121), we get a palindrome (2333314133332).

The spelling of 1212202111211 in words is "one trillion, two hundred twelve billion, two hundred two million, one hundred eleven thousand, two hundred eleven".