1222010001 has 6 divisors (see below), whose sum is σ = 1765125570. Its totient is φ = 814673328.

The previous prime is 1222009979. The next prime is 1222010057. The reversal of 1222010001 is 1000102221.

It can be written as a sum of positive squares in only one way, i.e., 1051315776 + 170694225 = 32424^2 + 13065^2 .

It is not a de Polignac number, because 1222010001 - 2⁵ = 1222009969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 135778889 = 1222010001 / (1 + 2 + 2 + 2 + 0 + 1 + 0 + 0 + 0 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222010081) 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 5 ways as a sum of consecutive naturals, for example, 67889436 + ... + 67889453.

It is an arithmetic number, because the mean of its divisors is an integer number (294187595).

Almost surely, 2^1222010001 is an apocalyptic number.

It is an amenable number.

1222010001 is a deficient number, since it is larger than the sum of its proper divisors (543115569).

1222010001 is a wasteful number, since it uses less digits than its factorization.

1222010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135778895 (or 135778892 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1222010001 is about 34957.2596322996. The cubic root of 1222010001 is about 1069.1162239752.

Adding to 1222010001 its reverse (1000102221), we get a palindrome (2222112222).

The spelling of 1222010001 in words is "one billion, two hundred twenty-two million, ten thousand, one".