121033001320 has 128 divisors (see below), whose sum is σ = 341132083200. Its totient is φ = 37545580800.

The previous prime is 121033001279. The next prime is 121033001329. The reversal of 121033001320 is 23100330121.

It is a junction number, because it is equal to n+sod(n) for n = 121033001294 and 121033001303.

It is not an unprimeable number, because it can be changed into a prime (121033001329) 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, 556761 + ... + 742999.

It is an arithmetic number, because the mean of its divisors is an integer number (2665094400).

Almost surely, 2^121033001320 is an apocalyptic number.

121033001320 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 121033001320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170566041600).

121033001320 is an abundant number, since it is smaller than the sum of its proper divisors (220099081880).

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

121033001320 is a wasteful number, since it uses less digits than its factorization.

121033001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186479 (or 186475 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 121033001320 its reverse (23100330121), we get a palindrome (144133331441).

The spelling of 121033001320 in words is "one hundred twenty-one billion, thirty-three million, one thousand, three hundred twenty".