1222200401 has 4 divisors (see below), whose sum is σ = 1222527600. Its totient is φ = 1221873204.

The previous prime is 1222200379. The next prime is 1222200407. The reversal of 1222200401 is 1040022221.

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: 1040022221 = 7 ⋅148574603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222200401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222200407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157931 + ... + 165488.

It is an arithmetic number, because the mean of its divisors is an integer number (305631900).

Almost surely, 2^1222200401 is an apocalyptic number.

It is an amenable number.

1222200401 is a deficient number, since it is larger than the sum of its proper divisors (327199).

1222200401 is an equidigital number, since it uses as much as digits as its factorization.

1222200401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327198.

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

The square root of 1222200401 is about 34959.9828518265. The cubic root of 1222200401 is about 1069.1717470226.

Adding to 1222200401 its reverse (1040022221), we get a palindrome (2262222622).

The spelling of 1222200401 in words is "one billion, two hundred twenty-two million, two hundred thousand, four hundred one".