2111020003021 has 2 divisors, whose sum is σ = 2111020003022. Its totient is φ = 2111020003020.

The previous prime is 2111020003007. The next prime is 2111020003109. The reversal of 2111020003021 is 1203000201112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1347895458121 + 763124544900 = 1160989^2 + 873570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111020003021 - 2¹³ = 2111019994829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111020002992 and 2111020003010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111020003921) 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 as a sum of consecutive naturals, namely, 1055510001510 + 1055510001511.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510001511).

Almost surely, 2^{2111020003021} is an apocalyptic number.

It is an amenable number.

2111020003021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111020003021 is an equidigital number, since it uses as much as digits as its factorization.

2111020003021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2111020003021 its reverse (1203000201112), we get a palindrome (3314020204133).

The spelling of 2111020003021 in words is "two trillion, one hundred eleven billion, twenty million, three thousand, twenty-one".