1212211122011 has 16 divisors (see below), whose sum is σ = 1317402240000. Its totient is φ = 1111171932000.

The previous prime is 1212211121983. The next prime is 1212211122019. The reversal of 1212211122011 is 1102211122121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212211122011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212211122019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3270365 + ... + 3622113.

It is an arithmetic number, because the mean of its divisors is an integer number (82337640000).

Almost surely, 2^{1212211122011} is an apocalyptic number.

1212211122011 is a deficient number, since it is larger than the sum of its proper divisors (105191117989).

1212211122011 is a wasteful number, since it uses less digits than its factorization.

1212211122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357650.

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

Adding to 1212211122011 its reverse (1102211122121), we get a palindrome (2314422244132).

The spelling of 1212211122011 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, eleven".