121301231020 has 48 divisors (see below), whose sum is σ = 257749944480. Its totient is φ = 47946415616.

The previous prime is 121301231011. The next prime is 121301231063. The reversal of 121301231020 is 20132103121.

It is a junction number, because it is equal to n+sod(n) for n = 121301230985 and 121301231003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3065079 + ... + 3104401.

It is an arithmetic number, because the mean of its divisors is an integer number (5369790510).

Almost surely, 2^121301231020 is an apocalyptic number.

121301231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121301231020 is an abundant number, since it is smaller than the sum of its proper divisors (136448713460).

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

121301231020 is a wasteful number, since it uses less digits than its factorization.

121301231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41154 (or 41152 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121301231020 its reverse (20132103121), we get a palindrome (141433334141).

The spelling of 121301231020 in words is "one hundred twenty-one billion, three hundred one million, two hundred thirty-one thousand, twenty".