1020222665 has 16 divisors (see below), whose sum is σ = 1526359680. Its totient is φ = 635982720.

The previous prime is 1020222659. The next prime is 1020222673. The reversal of 1020222665 is 5662220201.

It is not a de Polignac number, because 1020222665 - 2¹⁴ = 1020206281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1324580 + ... + 1325349.

It is an arithmetic number, because the mean of its divisors is an integer number (95397480).

Almost surely, 2^1020222665 is an apocalyptic number.

It is an amenable number.

1020222665 is a deficient number, since it is larger than the sum of its proper divisors (506137015).

1020222665 is a wasteful number, since it uses less digits than its factorization.

1020222665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649952.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1020222665 is about 31940.9246109126. The cubic root of 1020222665 is about 1006.6959524810.

Adding to 1020222665 its reverse (5662220201), we get a palindrome (6682442866).

The spelling of 1020222665 in words is "one billion, twenty million, two hundred twenty-two thousand, six hundred sixty-five".