1222042001 has 4 divisors (see below), whose sum is σ = 1235772900. Its totient is φ = 1208311104.

The previous prime is 1222041949. The next prime is 1222042027. The reversal of 1222042001 is 1002402221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193877776 + 1028164225 = 13924^2 + 32065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222042001 - 2⁶ = 1222041937 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 (1222042061) 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, 6865316 + ... + 6865493.

It is an arithmetic number, because the mean of its divisors is an integer number (308943225).

Almost surely, 2^1222042001 is an apocalyptic number.

It is an amenable number.

1222042001 is a deficient number, since it is larger than the sum of its proper divisors (13730899).

1222042001 is an equidigital number, since it uses as much as digits as its factorization.

1222042001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13730898.

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

The square root of 1222042001 is about 34957.7173310844. The cubic root of 1222042001 is about 1069.1255559829.

Adding to 1222042001 its reverse (1002402221), we get a palindrome (2224444222).

The spelling of 1222042001 in words is "one billion, two hundred twenty-two million, forty-two thousand, one".