1102220220 has 48 divisors (see below), whose sum is σ = 3161497248. Its totient is φ = 286755840.

The previous prime is 1102220137. The next prime is 1102220243. The reversal of 1102220220 is 220222011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1102220196 and 1102220205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221569 + ... + 226488.

It is an arithmetic number, because the mean of its divisors is an integer number (65864526).

Almost surely, 2^1102220220 is an apocalyptic number.

1102220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102220220 is an abundant number, since it is smaller than the sum of its proper divisors (2059277028).

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

1102220220 is a wasteful number, since it uses less digits than its factorization.

1102220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448110 (or 448108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1102220220 is about 33199.7021070973. The cubic root of 1102220220 is about 1032.9741605217.

Adding to 1102220220 its reverse (220222011), we get a palindrome (1322442231).

The spelling of 1102220220 in words is "one billion, one hundred two million, two hundred twenty thousand, two hundred twenty".