2011110400021 has 2 divisors, whose sum is σ = 2011110400022. Its totient is φ = 2011110400020.

The previous prime is 2011110400003. The next prime is 2011110400031. The reversal of 2011110400021 is 1200040111102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1290691399396 + 720419000625 = 1136086^2 + 848775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011110400021 - 2¹⁷ = 2011110268949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011110399974 and 2011110400010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011110400031) 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 as a sum of consecutive naturals, namely, 1005555200010 + 1005555200011.

It is an arithmetic number, because the mean of its divisors is an integer number (1005555200011).

Almost surely, 2^{2011110400021} is an apocalyptic number.

It is an amenable number.

2011110400021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011110400021 is an equidigital number, since it uses as much as digits as its factorization.

2011110400021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2011110400021 its reverse (1200040111102), we get a palindrome (3211150511123).

The spelling of 2011110400021 in words is "two trillion, eleven billion, one hundred ten million, four hundred thousand, twenty-one".