121202210002261 has 2 divisors, whose sum is σ = 121202210002262. Its totient is φ = 121202210002260.

The previous prime is 121202210002163. The next prime is 121202210002303. The reversal of 121202210002261 is 162200012202121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95674514382225 + 25527695620036 = 9781335^2 + 5052494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121202210002261 is a prime.

It is a super-2 number, since 2×121202210002261² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121202210002561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601105001130 + 60601105001131.

It is an arithmetic number, because the mean of its divisors is an integer number (60601105001131).

Almost surely, 2^{121202210002261} is an apocalyptic number.

It is an amenable number.

121202210002261 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202210002261 is an equidigital number, since it uses as much as digits as its factorization.

121202210002261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 121202210002261 its reverse (162200012202121), we get a palindrome (283402222204382).

The spelling of 121202210002261 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred ten million, two thousand, two hundred sixty-one".