121320233000 has 128 divisors (see below), whose sum is σ = 293217369120. Its totient is φ = 46958745600.

The previous prime is 121320232973. The next prime is 121320233009. The reversal of 121320233000 is 332023121.

It can be written as a sum of positive squares in 16 ways, for example, as 518108644 + 120802124356 = 22762^2 + 347566^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121320233000.

It is not an unprimeable number, because it can be changed into a prime (121320233009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3853322 + ... + 3884678.

Almost surely, 2^121320233000 is an apocalyptic number.

121320233000 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 121320233000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146608684560).

121320233000 is an abundant number, since it is smaller than the sum of its proper divisors (171897136120).

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

121320233000 is a wasteful number, since it uses less digits than its factorization.

121320233000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31504 (or 31490 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 121320233000 its reverse (332023121), we get a palindrome (121652256121).

The spelling of 121320233000 in words is "one hundred twenty-one billion, three hundred twenty million, two hundred thirty-three thousand".