121223220330 has 16 divisors (see below), whose sum is σ = 290935728864. Its totient is φ = 32326192080.

The previous prime is 121223220317. The next prime is 121223220343. The reversal of 121223220330 is 33022322121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121223220317) and next prime (121223220343).

It is a junction number, because it is equal to n+sod(n) for n = 121223220297 and 121223220306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2020386976 + ... + 2020387035.

It is an arithmetic number, because the mean of its divisors is an integer number (18183483054).

Almost surely, 2^121223220330 is an apocalyptic number.

121223220330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121223220330 is an abundant number, since it is smaller than the sum of its proper divisors (169712508534).

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

121223220330 is a wasteful number, since it uses less digits than its factorization.

121223220330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040774021.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 121223220330 its reverse (33022322121), we get a palindrome (154245542451).

The spelling of 121223220330 in words is "one hundred twenty-one billion, two hundred twenty-three million, two hundred twenty thousand, three hundred thirty".