121205312322 has 32 divisors (see below), whose sum is σ = 243480211200. Its totient is φ = 40223584128.

The previous prime is 121205312309. The next prime is 121205312323. The reversal of 121205312322 is 223213502121.

It is a junction number, because it is equal to n+sod(n) for n = 121205312292 and 121205312301.

It is not an unprimeable number, because it can be changed into a prime (121205312323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9786598 + ... + 9798974.

It is an arithmetic number, because the mean of its divisors is an integer number (7608756600).

Almost surely, 2^121205312322 is an apocalyptic number.

121205312322 is an abundant number, since it is smaller than the sum of its proper divisors (122274898878).

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

121205312322 is a wasteful number, since it uses less digits than its factorization.

121205312322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19450.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 121205312322 its reverse (223213502121), we get a palindrome (344418814443).

The spelling of 121205312322 in words is "one hundred twenty-one billion, two hundred five million, three hundred twelve thousand, three hundred twenty-two".