121028132969 has 2 divisors, whose sum is σ = 121028132970. Its totient is φ = 121028132968.

The previous prime is 121028132947. The next prime is 121028133091. The reversal of 121028132969 is 969231820121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69913705744 + 51114427225 = 264412^2 + 226085^2 .

It is a cyclic number.

It is not a de Polignac number, because 121028132969 - 2¹² = 121028128873 is a prime.

It is a super-2 number, since 2×121028132969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121028132909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60514066484 + 60514066485.

It is an arithmetic number, because the mean of its divisors is an integer number (60514066485).

Almost surely, 2^121028132969 is an apocalyptic number.

It is an amenable number.

121028132969 is a deficient number, since it is larger than the sum of its proper divisors (1).

121028132969 is an equidigital number, since it uses as much as digits as its factorization.

121028132969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 121028132969 in words is "one hundred twenty-one billion, twenty-eight million, one hundred thirty-two thousand, nine hundred sixty-nine".