121028369377 has 2 divisors, whose sum is σ = 121028369378. Its totient is φ = 121028369376.

The previous prime is 121028369353. The next prime is 121028369381. The reversal of 121028369377 is 773963820121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94263736576 + 26764632801 = 307024^2 + 163599^2 .

It is a cyclic number.

It is not a de Polignac number, because 121028369377 - 2¹¹ = 121028367329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121028369377.

It is not a weakly prime, because it can be changed into another prime (121028309377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60514184688 + 60514184689.

It is an arithmetic number, because the mean of its divisors is an integer number (60514184689).

Almost surely, 2^121028369377 is an apocalyptic number.

It is an amenable number.

121028369377 is a deficient number, since it is larger than the sum of its proper divisors (1).

121028369377 is an equidigital number, since it uses as much as digits as its factorization.

121028369377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 121028369377 in words is "one hundred twenty-one billion, twenty-eight million, three hundred sixty-nine thousand, three hundred seventy-seven".