1101111221001 has 8 divisors (see below), whose sum is σ = 1601616321504. Its totient is φ = 667340133920.

The previous prime is 1101111220969. The next prime is 1101111221051. The reversal of 1101111221001 is 1001221111011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1101111221001 - 2⁵ = 1101111220969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101111221051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16683503316 + ... + 16683503381.

It is an arithmetic number, because the mean of its divisors is an integer number (200202040188).

Almost surely, 2^{1101111221001} is an apocalyptic number.

1101111221001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101111221001 is a deficient number, since it is larger than the sum of its proper divisors (500505100503).

1101111221001 is a wasteful number, since it uses less digits than its factorization.

1101111221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33367006711.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1101111221001 its reverse (1001221111011), we get a palindrome (2102332332012).

It can be divided in two parts, 110 and 1111221001, that added together give a palindrome (1111221111).

The spelling of 1101111221001 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, one".