121221404330 has 16 divisors (see below), whose sum is σ = 234983030184. Its totient is φ = 44758672320.

The previous prime is 121221404329. The next prime is 121221404413. The reversal of 121221404330 is 33404122121.

It can be written as a sum of positive squares in 4 ways, for example, as 110769818041 + 10451586289 = 332821^2 + 102233^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121221404296 and 121221404305.

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, 466236041 + ... + 466236300.

Almost surely, 2^121221404330 is an apocalyptic number.

121221404330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221404330 is a deficient number, since it is larger than the sum of its proper divisors (113761625854).

121221404330 is a wasteful number, since it uses less digits than its factorization.

121221404330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932472361.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 121221404330 its reverse (33404122121), we get a palindrome (154625526451).

The spelling of 121221404330 in words is "one hundred twenty-one billion, two hundred twenty-one million, four hundred four thousand, three hundred thirty".