121351023 has 24 divisors (see below), whose sum is σ = 179421840. Its totient is φ = 79009920.

The previous prime is 121350991. The next prime is 121351033. The reversal of 121351023 is 320153121.

Added to its reverse (320153121) it gives a square (441504144 = 21012²).

It is not a de Polignac number, because 121351023 - 2⁵ = 121350991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121350987 and 121351005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121351033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91203 + ... + 92523.

It is an arithmetic number, because the mean of its divisors is an integer number (7475910).

Almost surely, 2^121351023 is an apocalyptic number.

121351023 is a deficient number, since it is larger than the sum of its proper divisors (58070817).

121351023 is a wasteful number, since it uses less digits than its factorization.

121351023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 121351023 is about 11015.9440358056. The cubic root of 121351023 is about 495.0865719413.

Adding to 121351023 its reverse (320153121), we get a square (441504144 = 21012²).

The spelling of 121351023 in words is "one hundred twenty-one million, three hundred fifty-one thousand, twenty-three".