1222012122011 has 16 divisors (see below), whose sum is σ = 1234638028800. Its totient is φ = 1209436699968.

The previous prime is 1222012121999. The next prime is 1222012122029. The reversal of 1222012122011 is 1102212102221.

It is a cyclic number.

It is not a de Polignac number, because 1222012122011 - 2²⁶ = 1221945013147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222012122041) 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, 99839630 + ... + 99851868.

It is an arithmetic number, because the mean of its divisors is an integer number (77164876800).

Almost surely, 2^{1222012122011} is an apocalyptic number.

1222012122011 is a deficient number, since it is larger than the sum of its proper divisors (12625906789).

1222012122011 is a wasteful number, since it uses less digits than its factorization.

1222012122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14218.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222012122011 its reverse (1102212102221), we get a palindrome (2324224224232).

The spelling of 1222012122011 in words is "one trillion, two hundred twenty-two billion, twelve million, one hundred twenty-two thousand, eleven".