121303203210 has 160 divisors (see below), whose sum is σ = 373963087872. Its totient is φ = 27637459200.

The previous prime is 121303203209. The next prime is 121303203211. The reversal of 121303203210 is 12302303121.

121303203210 is a `hidden beast` number, since 1 + 2 + 130 + 320 + 3 + 210 = 666.

It is an interprime number because it is at equal distance from previous prime (121303203209) and next prime (121303203211).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121303203211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1740535 + ... + 1808885.

Almost surely, 2^121303203210 is an apocalyptic number.

121303203210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121303203210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186981543936).

121303203210 is an abundant number, since it is smaller than the sum of its proper divisors (252659884662).

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

121303203210 is a wasteful number, since it uses less digits than its factorization.

121303203210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68690 (or 68681 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121303203210 its reverse (12302303121), we get a palindrome (133605506331).

The spelling of 121303203210 in words is "one hundred twenty-one billion, three hundred three million, two hundred three thousand, two hundred ten".