1100021231985 has 32 divisors (see below), whose sum is σ = 1995180216960. Its totient is φ = 513046338048.

The previous prime is 1100021231977. The next prime is 1100021232017. The reversal of 1100021231985 is 5891321200011.

It is not a de Polignac number, because 1100021231985 - 2³ = 1100021231977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148447204 + ... + 148454613.

It is an arithmetic number, because the mean of its divisors is an integer number (62349381780).

Almost surely, 2^{1100021231985} is an apocalyptic number.

1100021231985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1100021231985 is a deficient number, since it is larger than the sum of its proper divisors (895158984975).

1100021231985 is a wasteful number, since it uses less digits than its factorization.

1100021231985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296901857.

The product of its (nonzero) digits is 4320, while the sum is 33.

Adding to 1100021231985 its reverse (5891321200011), we get a palindrome (6991342431996).

The spelling of 1100021231985 in words is "one trillion, one hundred billion, twenty-one million, two hundred thirty-one thousand, nine hundred eighty-five".