1220021202324 has 48 divisors (see below), whose sum is σ = 2854168934400. Its totient is φ = 405610339680.

The previous prime is 1220021202289. The next prime is 1220021202329. The reversal of 1220021202324 is 4232021200221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220021202324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220021202329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7561009 + ... + 7720679.

It is an arithmetic number, because the mean of its divisors is an integer number (59461852800).

Almost surely, 2^{1220021202324} is an apocalyptic number.

It is an amenable number.

1220021202324 is an abundant number, since it is smaller than the sum of its proper divisors (1634147732076).

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

1220021202324 is a wasteful number, since it uses less digits than its factorization.

1220021202324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161340 (or 161338 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1220021202324 its reverse (4232021200221), we get a palindrome (5452042402545).

The spelling of 1220021202324 in words is "one trillion, two hundred twenty billion, twenty-one million, two hundred two thousand, three hundred twenty-four".