11002021120261 has 2 divisors, whose sum is σ = 11002021120262. Its totient is φ = 11002021120260.

The previous prime is 11002021120199. The next prime is 11002021120283. The reversal of 11002021120261 is 16202112020011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10907530049025 + 94491071236 = 3302655^2 + 307394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11002021120261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11002021120291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5501010560130 + 5501010560131.

It is an arithmetic number, because the mean of its divisors is an integer number (5501010560131).

Almost surely, 2^{11002021120261} is an apocalyptic number.

It is an amenable number.

11002021120261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11002021120261 is an equidigital number, since it uses as much as digits as its factorization.

11002021120261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11002021120261 its reverse (16202112020011), we get a palindrome (27204133140272).

The spelling of 11002021120261 in words is "eleven trillion, two billion, twenty-one million, one hundred twenty thousand, two hundred sixty-one".