21122000120011 has 16 divisors (see below), whose sum is σ = 25426653030400. Its totient is φ = 17520553086120.

The previous prime is 21122000120009. The next prime is 21122000120057. The reversal of 21122000120011 is 11002100022112.

It is not a de Polignac number, because 21122000120011 - 2¹ = 21122000120009 is a prime.

It is a super-2 number, since 2×21122000120011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21122000119973 and 21122000120000.

It is not an unprimeable number, because it can be changed into a prime (21122000129011) 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, 993218001 + ... + 993239266.

It is an arithmetic number, because the mean of its divisors is an integer number (1589165814400).

Almost surely, 2^{21122000120011} is an apocalyptic number.

21122000120011 is a deficient number, since it is larger than the sum of its proper divisors (4304652910389).

21122000120011 is an equidigital number, since it uses as much as digits as its factorization.

21122000120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986457319 (or 1986457305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21122000120011 its reverse (11002100022112), we get a palindrome (32124100142123).

The spelling of 21122000120011 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty thousand, eleven".