1222121210011 has 16 divisors (see below), whose sum is σ = 1329944718816. Its totient is φ = 1116303745536.

The previous prime is 1222121210003. The next prime is 1222121210017. The reversal of 1222121210011 is 1100121212221.

It is a cyclic number.

It is not a de Polignac number, because 1222121210011 - 2³ = 1222121210003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222121210017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221916 + ... + 1579078.

It is an arithmetic number, because the mean of its divisors is an integer number (83121544926).

Almost surely, 2^{1222121210011} is an apocalyptic number.

1222121210011 is a deficient number, since it is larger than the sum of its proper divisors (107823508805).

1222121210011 is a wasteful number, since it uses less digits than its factorization.

1222121210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357902.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1222121210011 its reverse (1100121212221), we get a palindrome (2322242422232).

The spelling of 1222121210011 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred ten thousand, eleven".