121231020231300 has 432 divisors, whose sum is σ = 425823507551232. Its totient is φ = 26501796921600.

The previous prime is 121231020231271. The next prime is 121231020231317. The reversal of 121231020231300 is 3132020132121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3415806555 + ... + 3415842045.

It is an arithmetic number, because the mean of its divisors is an integer number (985702563776).

Almost surely, 2^{121231020231300} is an apocalyptic number.

121231020231300 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 121231020231300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212911753775616).

121231020231300 is an abundant number, since it is smaller than the sum of its proper divisors (304592487319932).

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

121231020231300 is a wasteful number, since it uses less digits than its factorization.

121231020231300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45648 (or 45634 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121231020231300 its reverse (3132020132121), we get a palindrome (124363040363421).

The spelling of 121231020231300 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, twenty million, two hundred thirty-one thousand, three hundred".