1092221100 has 108 divisors (see below), whose sum is σ = 3624939864. Its totient is φ = 274122240.

The previous prime is 1092221089. The next prime is 1092221101. The reversal of 1092221100 is 11222901.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1092221101) 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, 20394 + ... + 50993.

It is an arithmetic number, because the mean of its divisors is an integer number (33564258).

Almost surely, 2^1092221100 is an apocalyptic number.

1092221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1092221100 is an abundant number, since it is smaller than the sum of its proper divisors (2532718764).

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

1092221100 is a wasteful number, since it uses less digits than its factorization.

1092221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71424 (or 71414 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1092221100 is about 33048.7685095829. The cubic root of 1092221100 is about 1029.8410223734.

The spelling of 1092221100 in words is "one billion, ninety-two million, two hundred twenty-one thousand, one hundred".