1111221022 has 4 divisors (see below), whose sum is σ = 1666831536. Its totient is φ = 555610510.

The previous prime is 1111221019. The next prime is 1111221029. The reversal of 1111221022 is 2201221111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2201221111 = 557 ⋅3951923.

It is a junction number, because it is equal to n+sod(n) for n = 1111220993 and 1111221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111221029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277805254 + ... + 277805257.

It is an arithmetic number, because the mean of its divisors is an integer number (416707884).

Almost surely, 2^1111221022 is an apocalyptic number.

1111221022 is a deficient number, since it is larger than the sum of its proper divisors (555610514).

1111221022 is an equidigital number, since it uses as much as digits as its factorization.

1111221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555610513.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1111221022 is about 33334.9819558973. The cubic root of 1111221022 is about 1035.7783193939.

Adding to 1111221022 its reverse (2201221111), we get a palindrome (3312442133).

The spelling of 1111221022 in words is "one billion, one hundred eleven million, two hundred twenty-one thousand, twenty-two".