1212223211310 has 96 divisors (see below), whose sum is σ = 3024335115360. Its totient is φ = 310950631936.

The previous prime is 1212223211239. The next prime is 1212223211357. The reversal of 1212223211310 is 131123222121.

It is a super-2 number, since 2×1212223211310² (a number of 25 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 6697564 + ... + 6876176.

It is an arithmetic number, because the mean of its divisors is an integer number (31503490785).

Almost surely, 2^{1212223211310} is an apocalyptic number.

1212223211310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212223211310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1512167557680).

1212223211310 is an abundant number, since it is smaller than the sum of its proper divisors (1812111904050).

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

1212223211310 is a wasteful number, since it uses less digits than its factorization.

1212223211310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178950 (or 178921 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1212223211310 its reverse (131123222121), we get a palindrome (1343346433431).

The spelling of 1212223211310 in words is "one trillion, two hundred twelve billion, two hundred twenty-three million, two hundred eleven thousand, three hundred ten".