21112122201011 has 16 divisors (see below), whose sum is σ = 22591495614240. Its totient is φ = 19669682718720.

The previous prime is 21112122200987. The next prime is 21112122201017. The reversal of 21112122201011 is 11010222121112.

It is not a de Polignac number, because 21112122201011 - 2³⁰ = 21111048459187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112122201017) 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, 5170451 + ... + 8304083.

It is an arithmetic number, because the mean of its divisors is an integer number (1411968475890).

Almost surely, 2^{21112122201011} is an apocalyptic number.

21112122201011 is a deficient number, since it is larger than the sum of its proper divisors (1479373413229).

21112122201011 is a wasteful number, since it uses less digits than its factorization.

21112122201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139526.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21112122201011 its reverse (11010222121112), we get a palindrome (32122344322123).

The spelling of 21112122201011 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty-two million, two hundred one thousand, eleven".