1217021044 has 6 divisors (see below), whose sum is σ = 2129786834. Its totient is φ = 608510520.

The previous prime is 1217021027. The next prime is 1217021051. The reversal of 1217021044 is 4401207121.

It can be written as a sum of positive squares in only one way, i.e., 954192100 + 262828944 = 30890^2 + 16212^2 .

It is a super-2 number, since 2×1217021044² = 2962280443077699872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152127627 + ... + 152127634.

Almost surely, 2^1217021044 is an apocalyptic number.

It is an amenable number.

1217021044 is a deficient number, since it is larger than the sum of its proper divisors (912765790).

1217021044 is a wasteful number, since it uses less digits than its factorization.

1217021044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304255265 (or 304255263 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1217021044 is about 34885.8286987711. The cubic root of 1217021044 is about 1067.6593210314.

Adding to 1217021044 its reverse (4401207121), we get a palindrome (5618228165).

The spelling of 1217021044 in words is "one billion, two hundred seventeen million, twenty-one thousand, forty-four".