1222201320 has 32 divisors (see below), whose sum is σ = 3666604320. Its totient is φ = 325920320.

The previous prime is 1222201297. The next prime is 1222201327. The reversal of 1222201320 is 231022221.

It is a happy number.

1222201320 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1222201320.

It is not an unprimeable number, because it can be changed into a prime (1222201327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5092386 + ... + 5092625.

It is an arithmetic number, because the mean of its divisors is an integer number (114581385).

Almost surely, 2^1222201320 is an apocalyptic number.

1222201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222201320 is an abundant number, since it is smaller than the sum of its proper divisors (2444403000).

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

1222201320 is a wasteful number, since it uses less digits than its factorization.

1222201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10185025 (or 10185021 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1222201320 is about 34959.9959954231. The cubic root of 1222201320 is about 1069.1720150006.

Adding to 1222201320 its reverse (231022221), we get a palindrome (1453223541).

The spelling of 1222201320 in words is "one billion, two hundred twenty-two million, two hundred one thousand, three hundred twenty".