1101021867 has 12 divisors (see below), whose sum is σ = 1734943704. Its totient is φ = 667285920.

The previous prime is 1101021863. The next prime is 1101021869. The reversal of 1101021867 is 7681201011.

It is not a de Polignac number, because 1101021867 - 2² = 1101021863 is a prime.

It is a super-2 number, since 2×1101021867² = 2424498303224331378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101021867.

It is not an unprimeable number, because it can be changed into a prime (1101021863) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5560618 + ... + 5560815.

It is an arithmetic number, because the mean of its divisors is an integer number (144578642).

Almost surely, 2^1101021867 is an apocalyptic number.

1101021867 is a deficient number, since it is larger than the sum of its proper divisors (633921837).

1101021867 is a wasteful number, since it uses less digits than its factorization.

1101021867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11121450 (or 11121447 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 1101021867 is about 33181.6495521244. The cubic root of 1101021867 is about 1032.5996689445.

Adding to 1101021867 its reverse (7681201011), we get a palindrome (8782222878).

The spelling of 1101021867 in words is "one billion, one hundred one million, twenty-one thousand, eight hundred sixty-seven".