20101222012011 has 32 divisors (see below), whose sum is σ = 30831694123008. Its totient is φ = 11410969115520.

The previous prime is 20101222011889. The next prime is 20101222012037. The reversal of 20101222012011 is 11021022210102.

It is not a de Polignac number, because 20101222012011 - 2¹¹ = 20101222009963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20101222012411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15953941 + ... + 17167721.

It is an arithmetic number, because the mean of its divisors is an integer number (963490441344).

Almost surely, 2^{20101222012011} is an apocalyptic number.

20101222012011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20101222012011 is a deficient number, since it is larger than the sum of its proper divisors (10730472110997).

20101222012011 is a wasteful number, since it uses less digits than its factorization.

20101222012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218971.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20101222012011 its reverse (11021022210102), we get a palindrome (31122244222113).

The spelling of 20101222012011 in words is "twenty trillion, one hundred one billion, two hundred twenty-two million, twelve thousand, eleven".