22121210111011 has 16 divisors (see below), whose sum is σ = 26506796394240. Its totient is φ = 18223422513120.

The previous prime is 22121210110957. The next prime is 22121210111023. The reversal of 22121210111011 is 11011101212122.

It is a de Polignac number, because none of the positive numbers 2^k-22121210111011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121210111071) 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, 2300932380 + ... + 2300941993.

It is an arithmetic number, because the mean of its divisors is an integer number (1656674774640).

Almost surely, 2^{22121210111011} is an apocalyptic number.

22121210111011 is a deficient number, since it is larger than the sum of its proper divisors (4385586283229).

22121210111011 is a wasteful number, since it uses less digits than its factorization.

22121210111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601874426.

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

Adding to 22121210111011 its reverse (11011101212122), we get a palindrome (33132311323133).

The spelling of 22121210111011 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred ten million, one hundred eleven thousand, eleven".