1211412244220 has 24 divisors (see below), whose sum is σ = 2545891556208. Its totient is φ = 484198070400.

The previous prime is 1211412244201. The next prime is 1211412244291. The reversal of 1211412244220 is 224422141121.

It is a super-3 number, since 3×1211412244220³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1211412244220.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 22899626 + ... + 22952465.

It is an arithmetic number, because the mean of its divisors is an integer number (106078814842).

Almost surely, 2^{1211412244220} is an apocalyptic number.

1211412244220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211412244220 is an abundant number, since it is smaller than the sum of its proper divisors (1334479311988).

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

1211412244220 is a wasteful number, since it uses less digits than its factorization.

1211412244220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45853421 (or 45853419 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 1211412244220 its reverse (224422141121), we get a palindrome (1435834385341).

The spelling of 1211412244220 in words is "one trillion, two hundred eleven billion, four hundred twelve million, two hundred forty-four thousand, two hundred twenty".