121302123000 has 128 divisors (see below), whose sum is σ = 400725299520. Its totient is φ = 30444441600.

The previous prime is 121302122999. The next prime is 121302123001. The reversal of 121302123000 is 321203121.

It is an interprime number because it is at equal distance from previous prime (121302122999) and next prime (121302123001).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121302123001) 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 31 ways as a sum of consecutive naturals, for example, 1138237 + ... + 1240236.

Almost surely, 2^121302123000 is an apocalyptic number.

121302123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121302123000 is an abundant number, since it is smaller than the sum of its proper divisors (279423176520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121302123000 is a wasteful number, since it uses less digits than its factorization.

121302123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378514 (or 2378500 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 121302123000 its reverse (321203121), we get a palindrome (121623326121).

The spelling of 121302123000 in words is "one hundred twenty-one billion, three hundred two million, one hundred twenty-three thousand".