1220201222 has 4 divisors (see below), whose sum is σ = 1830301836. Its totient is φ = 610100610.

The previous prime is 1220201189. The next prime is 1220201249. The reversal of 1220201222 is 2221020221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221020221 = 7 ⋅317288603.

It is a junction number, because it is equal to n+sod(n) for n = 1220201197 and 1220201206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305050304 + ... + 305050307.

It is an arithmetic number, because the mean of its divisors is an integer number (457575459).

Almost surely, 2^1220201222 is an apocalyptic number.

1220201222 is a deficient number, since it is larger than the sum of its proper divisors (610100614).

1220201222 is an equidigital number, since it uses as much as digits as its factorization.

1220201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610100613.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1220201222 is about 34931.3787589325. The cubic root of 1220201222 is about 1068.5884732826.

Adding to 1220201222 its reverse (2221020221), we get a palindrome (3441221443).

The spelling of 1220201222 in words is "one billion, two hundred twenty million, two hundred one thousand, two hundred twenty-two".