121030303020 has 96 divisors (see below), whose sum is σ = 370253189376. Its totient is φ = 29296185600.

The previous prime is 121030302997. The next prime is 121030303039. The reversal of 121030303020 is 20303030121.

It is a super-2 number, since 2×121030303020² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 297547 + ... + 574973.

It is an arithmetic number, because the mean of its divisors is an integer number (3856804056).

Almost surely, 2^121030303020 is an apocalyptic number.

121030303020 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 121030303020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185126594688).

121030303020 is an abundant number, since it is smaller than the sum of its proper divisors (249222886356).

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

121030303020 is a wasteful number, since it uses less digits than its factorization.

121030303020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278111 (or 278109 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 121030303020 its reverse (20303030121), we get a palindrome (141333333141).

The spelling of 121030303020 in words is "one hundred twenty-one billion, thirty million, three hundred three thousand, twenty".