20112211121011 has 16 divisors (see below), whose sum is σ = 20198707200000. Its totient is φ = 20025957684096.

The previous prime is 20112211121003. The next prime is 20112211121047. The reversal of 20112211121011 is 11012111221102.

It is a cyclic number.

It is not a de Polignac number, because 20112211121011 - 2³ = 20112211121003 is a prime.

It is a super-2 number, since 2×20112211121011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112211121711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374091150 + ... + 374144908.

It is an arithmetic number, because the mean of its divisors is an integer number (1262419200000).

Almost surely, 2^{20112211121011} is an apocalyptic number.

20112211121011 is a deficient number, since it is larger than the sum of its proper divisors (86496078989).

20112211121011 is a wasteful number, since it uses less digits than its factorization.

20112211121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55986.

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

Adding to 20112211121011 its reverse (11012111221102), we get a palindrome (31124322342113).

The spelling of 20112211121011 in words is "twenty trillion, one hundred twelve billion, two hundred eleven million, one hundred twenty-one thousand, eleven".