1220000233320 has 96 divisors (see below), whose sum is σ = 4325455386720. Its totient is φ = 295757631360.

The previous prime is 1220000233301. The next prime is 1220000233349. The reversal of 1220000233320 is 233320000221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1220000233293 and 1220000233302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154036474 + ... + 154044393.

It is an arithmetic number, because the mean of its divisors is an integer number (45056826945).

Almost surely, 2^{1220000233320} is an apocalyptic number.

1220000233320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220000233320 is an abundant number, since it is smaller than the sum of its proper divisors (3105455153400).

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

1220000233320 is a wasteful number, since it uses less digits than its factorization.

1220000233320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308080895 (or 308080888 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 1220000233320 its reverse (233320000221), we get a palindrome (1453320233541).

The spelling of 1220000233320 in words is "one trillion, two hundred twenty billion, two hundred thirty-three thousand, three hundred twenty".