1101221222 has 4 divisors (see below), whose sum is σ = 1651831836. Its totient is φ = 550610610.

The previous prime is 1101221197. The next prime is 1101221311. The reversal of 1101221222 is 2221221011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221221011 = 19 ⋅116906369.

It is a junction number, because it is equal to n+sod(n) for n = 1101221197 and 1101221206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275305304 + ... + 275305307.

It is an arithmetic number, because the mean of its divisors is an integer number (412957959).

Almost surely, 2^1101221222 is an apocalyptic number.

1101221222 is a deficient number, since it is larger than the sum of its proper divisors (550610614).

1101221222 is an equidigital number, since it uses as much as digits as its factorization.

1101221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550610613.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1101221222 is about 33184.6534108765. The cubic root of 1101221222 is about 1032.6619872600.

Adding to 1101221222 its reverse (2221221011), we get a palindrome (3322442233).

The spelling of 1101221222 in words is "one billion, one hundred one million, two hundred twenty-one thousand, two hundred twenty-two".