1221043030230 has 32 divisors (see below), whose sum is σ = 2965810546944. Its totient is φ = 321688444256.

The previous prime is 1221043030211. The next prime is 1221043030267. The reversal of 1221043030230 is 320303401221.

It is a junction number, because it is equal to n+sod(n) for n = 1221043030197 and 1221043030206.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 245186874 + ... + 245191853.

It is an arithmetic number, because the mean of its divisors is an integer number (92681579592).

Almost surely, 2^{1221043030230} is an apocalyptic number.

1221043030230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221043030230 is an abundant number, since it is smaller than the sum of its proper divisors (1744767516714).

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

1221043030230 is a wasteful number, since it uses less digits than its factorization.

1221043030230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490378820.

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

Adding to 1221043030230 its reverse (320303401221), we get a palindrome (1541346431451).

The spelling of 1221043030230 in words is "one trillion, two hundred twenty-one billion, forty-three million, thirty thousand, two hundred thirty".