1102221278 has 4 divisors (see below), whose sum is σ = 1653331920. Its totient is φ = 551110638.

The previous prime is 1102221277. The next prime is 1102221283. The reversal of 1102221278 is 8721222011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8721222011 = 37 ⋅235708703.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102221271) 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 as a sum of consecutive naturals, namely, 275555318 + ... + 275555321.

It is an arithmetic number, because the mean of its divisors is an integer number (413332980).

Almost surely, 2^1102221278 is an apocalyptic number.

1102221278 is a deficient number, since it is larger than the sum of its proper divisors (551110642).

1102221278 is an equidigital number, since it uses as much as digits as its factorization.

1102221278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551110641.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1102221278 is about 33199.7180409714. The cubic root of 1102221278 is about 1032.9744910323.

Adding to 1102221278 its reverse (8721222011), we get a palindrome (9823443289).

The spelling of 1102221278 in words is "one billion, one hundred two million, two hundred twenty-one thousand, two hundred seventy-eight".