12101022020261 has 2 divisors, whose sum is σ = 12101022020262. Its totient is φ = 12101022020260.

The previous prime is 12101022020231. The next prime is 12101022020299. The reversal of 12101022020261 is 16202022010121.

12101022020261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11302331267236 + 798690753025 = 3361894^2 + 893695^2 .

It is an emirp because it is prime and its reverse (16202022010121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12101022020261 - 2³⁰ = 12099948278437 is a prime.

It is a super-2 number, since 2×12101022020261² (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 (12101022020231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050511010130 + 6050511010131.

It is an arithmetic number, because the mean of its divisors is an integer number (6050511010131).

Almost surely, 2^{12101022020261} is an apocalyptic number.

It is an amenable number.

12101022020261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101022020261 is an equidigital number, since it uses as much as digits as its factorization.

12101022020261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12101022020261 its reverse (16202022010121), we get a palindrome (28303044030382).

The spelling of 12101022020261 in words is "twelve trillion, one hundred one billion, twenty-two million, twenty thousand, two hundred sixty-one".