1221244211230 has 32 divisors (see below), whose sum is σ = 2223059994720. Its totient is φ = 482982635520.

The previous prime is 1221244211219. The next prime is 1221244211249. The reversal of 1221244211230 is 321124421221.

It is a super-2 number, since 2×1221244211230² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221244211195 and 1221244211204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28824622 + ... + 28866958.

It is an arithmetic number, because the mean of its divisors is an integer number (69470624835).

Almost surely, 2^{1221244211230} is an apocalyptic number.

1221244211230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221244211230 is a deficient number, since it is larger than the sum of its proper divisors (1001815783490).

1221244211230 is a wasteful number, since it uses less digits than its factorization.

1221244211230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74844.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1221244211230 its reverse (321124421221), we get a palindrome (1542368632451).

The spelling of 1221244211230 in words is "one trillion, two hundred twenty-one billion, two hundred forty-four million, two hundred eleven thousand, two hundred thirty".