121303000000 has 784 divisors, whose sum is σ = 391154993152. Its totient is φ = 36288000000.

The previous prime is 121302999991. The next prime is 121303000003. The reversal of 121303000000 is 303121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303000003) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 2820999979 + ... + 2821000021.

Almost surely, 2^121303000000 is an apocalyptic number.

121303000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121303000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195577496576).

121303000000 is an abundant number, since it is smaller than the sum of its proper divisors (269851993152).

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

121303000000 is an frugal number, since it uses more digits than its factorization.

121303000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 121303000000 its reverse (303121), we get a palindrome (121303303121).

The spelling of 121303000000 in words is "one hundred twenty-one billion, three hundred three million", and thus it is an aban number.