1102220100 has 108 divisors (see below), whose sum is σ = 3464244420. Its totient is φ = 293126400.

The previous prime is 1102220089. The next prime is 1102220107. The reversal of 1102220100 is 10222011.

It can be written as a sum of positive squares in 6 ways, for example, as 92505924 + 1009714176 = 9618^2 + 31776^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1102220107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 377446 + ... + 380354.

Almost surely, 2^1102220100 is an apocalyptic number.

1102220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1102220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1732122210).

1102220100 is an abundant number, since it is smaller than the sum of its proper divisors (2362024320).

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

1102220100 is a wasteful number, since it uses less digits than its factorization.

1102220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350 (or 3340 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1102220100 is about 33199.7002998521. The cubic root of 1102220100 is about 1032.9741230347.

Adding to 1102220100 its reverse (10222011), we get a palindrome (1112442111).

The spelling of 1102220100 in words is "one billion, one hundred two million, two hundred twenty thousand, one hundred".