1220211234324 has 72 divisors (see below), whose sum is σ = 3129094648680. Its totient is φ = 400854915072.

The previous prime is 1220211234323. The next prime is 1220211234331. The reversal of 1220211234324 is 4234321120221.

1220211234324 is a `hidden beast` number, since 1 + 2 + 202 + 1 + 1 + 23 + 432 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 265451648400 + 954759585924 = 515220^2 + 977118^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220211234323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3229522 + ... + 3587510.

Almost surely, 2^{1220211234324} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220211234324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564547324340).

1220211234324 is an abundant number, since it is smaller than the sum of its proper divisors (1908883414356).

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

1220211234324 is a wasteful number, since it uses less digits than its factorization.

1220211234324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359369 (or 359364 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1220211234324 its reverse (4234321120221), we get a palindrome (5454532354545).

The spelling of 1220211234324 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred thirty-four thousand, three hundred twenty-four".