1220223213232 has 40 divisors (see below), whose sum is σ = 2483310700800. Its totient is φ = 579720187200.

The previous prime is 1220223213199. The next prime is 1220223213281. The reversal of 1220223213232 is 2323123220221.

It is a super-2 number, since 2×1220223213232² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220223213197 and 1220223213206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10923982 + ... + 11035117.

It is an arithmetic number, because the mean of its divisors is an integer number (62082767520).

Almost surely, 2^{1220223213232} is an apocalyptic number.

It is an amenable number.

1220223213232 is an abundant number, since it is smaller than the sum of its proper divisors (1263087487568).

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

1220223213232 is a wasteful number, since it uses less digits than its factorization.

1220223213232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21959281 (or 21959275 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1220223213232 its reverse (2323123220221), we get a palindrome (3543346433453).

The spelling of 1220223213232 in words is "one trillion, two hundred twenty billion, two hundred twenty-three million, two hundred thirteen thousand, two hundred thirty-two".