11220020120021 has 2 divisors, whose sum is σ = 11220020120022. Its totient is φ = 11220020120020.

The previous prime is 11220020120009. The next prime is 11220020120033. The reversal of 11220020120021 is 12002102002211.

It is a balanced prime because it is at equal distance from previous prime (11220020120009) and next prime (11220020120033).

It can be written as a sum of positive squares in only one way, i.e., 9304854748996 + 1915165371025 = 3050386^2 + 1383895^2 .

It is an emirp because it is prime and its reverse (12002102002211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11220020120021 - 2¹⁸ = 11220019857877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220020119978 and 11220020120005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220020125021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610010060010 + 5610010060011.

It is an arithmetic number, because the mean of its divisors is an integer number (5610010060011).

Almost surely, 2^{11220020120021} is an apocalyptic number.

It is an amenable number.

11220020120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220020120021 is an equidigital number, since it uses as much as digits as its factorization.

11220020120021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11220020120021 its reverse (12002102002211), we get a palindrome (23222122122232).

The spelling of 11220020120021 in words is "eleven trillion, two hundred twenty billion, twenty million, one hundred twenty thousand, twenty-one".