1011221092 has 12 divisors (see below), whose sum is σ = 2022442240. Its totient is φ = 433380456.

The previous prime is 1011221083. The next prime is 1011221111. The reversal of 1011221092 is 2901221101.

It is a happy number.

1011221092 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18057492 + ... + 18057547.

Almost surely, 2^1011221092 is an apocalyptic number.

It is an amenable number.

1011221092 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1011221092 is a wasteful number, since it uses less digits than its factorization.

1011221092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36115050 (or 36115048 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1011221092 is about 31799.7027030128. The cubic root of 1011221092 is about 1003.7264602449.

Adding to 1011221092 its reverse (2901221101), we get a palindrome (3912442193).

The spelling of 1011221092 in words is "one billion, eleven million, two hundred twenty-one thousand, ninety-two".