1022812245 has 64 divisors (see below), whose sum is σ = 2237975040. Its totient is φ = 431599104.

The previous prime is 1022812243. The next prime is 1022812247. The reversal of 1022812245 is 5422182201.

It is an interprime number because it is at equal distance from previous prime (1022812243) and next prime (1022812247).

It is not a de Polignac number, because 1022812245 - 2¹ = 1022812243 is a prime.

It is a super-2 number, since 2×1022812245² = 2092289777043880050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022812243) 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 63 ways as a sum of consecutive naturals, for example, 29344 + ... + 53913.

It is an arithmetic number, because the mean of its divisors is an integer number (34968360).

Almost surely, 2^1022812245 is an apocalyptic number.

1022812245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1022812245 is an abundant number, since it is smaller than the sum of its proper divisors (1215162795).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022812245 is a wasteful number, since it uses less digits than its factorization.

1022812245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83291 (or 83285 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1022812245 is about 31981.4359433719. The cubic root of 1022812245 is about 1007.5469814533.

Adding to 1022812245 its reverse (5422182201), we get a palindrome (6444994446).

The spelling of 1022812245 in words is "one billion, twenty-two million, eight hundred twelve thousand, two hundred forty-five".