1222220201 has 4 divisors (see below), whose sum is σ = 1286547600. Its totient is φ = 1157892804.

The previous prime is 1222220183. The next prime is 1222220249. The reversal of 1222220201 is 1020222221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222220201 - 2⁶ = 1222220137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222220501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32163671 + ... + 32163708.

It is an arithmetic number, because the mean of its divisors is an integer number (321636900).

Almost surely, 2^1222220201 is an apocalyptic number.

It is an amenable number.

1222220201 is a deficient number, since it is larger than the sum of its proper divisors (64327399).

1222220201 is an equidigital number, since it uses as much as digits as its factorization.

1222220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64327398.

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

The square root of 1222220201 is about 34960.2660315965. The cubic root of 1222220201 is about 1069.1775206220.

Adding to 1222220201 its reverse (1020222221), we get a palindrome (2242442422).

It can be divided in two parts, 12222 and 20201, that added together give a palindrome (32423).

The spelling of 1222220201 in words is "one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred one".