1101021111001 has 16 divisors (see below), whose sum is σ = 1313208336384. Its totient is φ = 902570345424.

The previous prime is 1101021110989. The next prime is 1101021111011. The reversal of 1101021111001 is 1001111201011.

It is a cyclic number.

It is not a de Polignac number, because 1101021111001 - 2⁹ = 1101021110489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101021111011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634600 + ... + 1613926.

It is an arithmetic number, because the mean of its divisors is an integer number (82075521024).

Almost surely, 2^{1101021111001} is an apocalyptic number.

It is an amenable number.

1101021111001 is a deficient number, since it is larger than the sum of its proper divisors (212187225383).

1101021111001 is an equidigital number, since it uses as much as digits as its factorization.

1101021111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986340.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1101021111001 its reverse (1001111201011), we get a palindrome (2102132312012).

The spelling of 1101021111001 in words is "one trillion, one hundred one billion, twenty-one million, one hundred eleven thousand, one".