121222002320 has 80 divisors (see below), whose sum is σ = 294237453312. Its totient is φ = 46358146560.

The previous prime is 121222002311. The next prime is 121222002337. The reversal of 121222002320 is 23200222121.

It is a tau number, because it is divible by the number of its divisors (80).

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, 4071809 + ... + 4101471.

Almost surely, 2^121222002320 is an apocalyptic number.

121222002320 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 121222002320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147118726656).

121222002320 is an abundant number, since it is smaller than the sum of its proper divisors (173015450992).

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

121222002320 is a wasteful number, since it uses less digits than its factorization.

121222002320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31920 (or 31914 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 121222002320 its reverse (23200222121), we get a palindrome (144422224441).

The spelling of 121222002320 in words is "one hundred twenty-one billion, two hundred twenty-two million, two thousand, three hundred twenty".