1020622217 has 8 divisors (see below), whose sum is σ = 1127644416. Its totient is φ = 918820672.

The previous prime is 1020622153. The next prime is 1020622241. The reversal of 1020622217 is 7122260201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020622217 - 2⁶ = 1020622153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020622192 and 1020622201.

It is not an unprimeable number, because it can be changed into a prime (1020622247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1304753 + ... + 1305534.

It is an arithmetic number, because the mean of its divisors is an integer number (140955552).

Almost surely, 2^1020622217 is an apocalyptic number.

1020622217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1020622217 is a deficient number, since it is larger than the sum of its proper divisors (107022199).

1020622217 is a wasteful number, since it uses less digits than its factorization.

1020622217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610327.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1020622217 is about 31947.1785452174. The cubic root of 1020622217 is about 1006.8273534970.

Adding to 1020622217 its reverse (7122260201), we get a palindrome (8142882418).

It can be divided in two parts, 10206 and 22217, that added together give a palindrome (32423).

The spelling of 1020622217 in words is "one billion, twenty million, six hundred twenty-two thousand, two hundred seventeen".