1222022201 has 4 divisors (see below), whose sum is σ = 1261442304. Its totient is φ = 1182602100.

The previous prime is 1222022189. The next prime is 1222022209. The reversal of 1222022201 is 1022202221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1022202221 = 353 ⋅2895757.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222022201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222022209) 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, 19710005 + ... + 19710066.

It is an arithmetic number, because the mean of its divisors is an integer number (315360576).

Almost surely, 2^1222022201 is an apocalyptic number.

It is an amenable number.

1222022201 is a deficient number, since it is larger than the sum of its proper divisors (39420103).

1222022201 is an equidigital number, since it uses as much as digits as its factorization.

1222022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39420102.

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

The square root of 1222022201 is about 34957.4341306681. The cubic root of 1222022201 is about 1069.1197818223.

Adding to 1222022201 its reverse (1022202221), we get a palindrome (2244224422).

It can be divided in two parts, 122202220 and 1, that added together give a palindrome (122202221).

The spelling of 1222022201 in words is "one billion, two hundred twenty-two million, twenty-two thousand, two hundred one".