121703030775 has 18 divisors (see below), whose sum is σ = 217983651080. Its totient is φ = 64908282960.

The previous prime is 121703030773. The next prime is 121703030777. The reversal of 121703030775 is 577030307121.

It is an interprime number because it is at equal distance from previous prime (121703030773) and next prime (121703030777).

It is not a de Polignac number, because 121703030775 - 2¹ = 121703030773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121703030773) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 270450955 + ... + 270451404.

Almost surely, 2^121703030775 is an apocalyptic number.

121703030775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121703030775 is a deficient number, since it is larger than the sum of its proper divisors (96280620305).

121703030775 is a wasteful number, since it uses less digits than its factorization.

121703030775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540902375 (or 540902367 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 36.

Adding to 121703030775 its reverse (577030307121), we get a palindrome (698733337896).

The spelling of 121703030775 in words is "one hundred twenty-one billion, seven hundred three million, thirty thousand, seven hundred seventy-five".