221321030121330 has 32 divisors (see below), whose sum is σ = 548305003657728. Its totient is φ = 57115104547200.

The previous prime is 221321030121313. The next prime is 221321030121377. The reversal of 221321030121330 is 33121030123122.

It is a super-2 number, since 2×221321030121330² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221321030121330.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118989800211 + ... + 118989802070.

It is an arithmetic number, because the mean of its divisors is an integer number (17134531364304).

Almost surely, 2^{221321030121330} is an apocalyptic number.

221321030121330 is an abundant number, since it is smaller than the sum of its proper divisors (326983973536398).

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

221321030121330 is a wasteful number, since it uses less digits than its factorization.

221321030121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237979602322.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 221321030121330 its reverse (33121030123122), we get a palindrome (254442060244452).

The spelling of 221321030121330 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, thirty million, one hundred twenty-one thousand, three hundred thirty".