1089722111 has 4 divisors (see below), whose sum is σ = 1092643992. Its totient is φ = 1086800232.

The previous prime is 1089722099. The next prime is 1089722147. The reversal of 1089722111 is 1112279801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112279801 = 15461 ⋅71941.

It is a cyclic number.

It is not a de Polignac number, because 1089722111 - 2¹⁸ = 1089459967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089722171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460381 + ... + 1461126.

It is an arithmetic number, because the mean of its divisors is an integer number (273160998).

Almost surely, 2^1089722111 is an apocalyptic number.

1089722111 is a deficient number, since it is larger than the sum of its proper divisors (2921881).

1089722111 is an equidigital number, since it uses as much as digits as its factorization.

1089722111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921880.

The product of its (nonzero) digits is 2016, while the sum is 32.

The square root of 1089722111 is about 33010.9392626141. The cubic root of 1089722111 is about 1029.0550012266.

The spelling of 1089722111 in words is "one billion, eighty-nine million, seven hundred twenty-two thousand, one hundred eleven".