121221222130130 has 16 divisors (see below), whose sum is σ = 218292698879640. Its totient is φ = 48467489064192.

The previous prime is 121221222130079. The next prime is 121221222130189. The reversal of 121221222130130 is 31031222122121.

It can be written as a sum of positive squares in 4 ways, for example, as 74818572951529 + 46402649178601 = 8649773^2 + 6811949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121221222130096 and 121221222130105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2624949239 + ... + 2624995418.

Almost surely, 2^{121221222130130} is an apocalyptic number.

121221222130130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221222130130 is a deficient number, since it is larger than the sum of its proper divisors (97071476749510).

121221222130130 is a wasteful number, since it uses less digits than its factorization.

121221222130130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249946973.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 121221222130130 its reverse (31031222122121), we get a palindrome (152252444252251).

The spelling of 121221222130130 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred thirty thousand, one hundred thirty".