1022212045 has 4 divisors (see below), whose sum is σ = 1226654460. Its totient is φ = 817769632.

The previous prime is 1022212033. The next prime is 1022212049. The reversal of 1022212045 is 5402122201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5402122201 = 7 ⋅771731743.

It can be written as a sum of positive squares in 2 ways, for example, as 628705476 + 393506569 = 25074^2 + 19837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022212045 - 2⁷ = 1022211917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022212049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102221200 + ... + 102221209.

It is an arithmetic number, because the mean of its divisors is an integer number (306663615).

Almost surely, 2^1022212045 is an apocalyptic number.

It is an amenable number.

1022212045 is a deficient number, since it is larger than the sum of its proper divisors (204442415).

1022212045 is an equidigital number, since it uses as much as digits as its factorization.

1022212045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204442414.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1022212045 is about 31972.0509977074. The cubic root of 1022212045 is about 1007.3498621783.

Adding to 1022212045 its reverse (5402122201), we get a palindrome (6424334246).

The spelling of 1022212045 in words is "one billion, twenty-two million, two hundred twelve thousand, forty-five".