11202120020981 has 2 divisors, whose sum is σ = 11202120020982. Its totient is φ = 11202120020980.

The previous prime is 11202120020969. The next prime is 11202120021089. The reversal of 11202120020981 is 18902002120211.

Together with next prime (11202120021089) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10857980571025 + 344139449956 = 3295145^2 + 586634^2 .

It is a cyclic number.

It is not a de Polignac number, because 11202120020981 - 2¹⁰ = 11202120019957 is a prime.

It is a super-2 number, since 2×11202120020981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11202120022981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601060010490 + 5601060010491.

It is an arithmetic number, because the mean of its divisors is an integer number (5601060010491).

Almost surely, 2^{11202120020981} is an apocalyptic number.

It is an amenable number.

11202120020981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11202120020981 is an equidigital number, since it uses as much as digits as its factorization.

11202120020981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 11202120020981 in words is "eleven trillion, two hundred two billion, one hundred twenty million, twenty thousand, nine hundred eighty-one".