1101111221213 has 16 divisors (see below), whose sum is σ = 1119194918400. Its totient is φ = 1083077303616.

The previous prime is 1101111221201. The next prime is 1101111221261. The reversal of 1101111221213 is 3121221111011.

It is a cyclic number.

It is not a de Polignac number, because 1101111221213 - 2¹² = 1101111217117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101111221191 and 1101111221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101111221293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179535695 + ... + 179541827.

It is an arithmetic number, because the mean of its divisors is an integer number (69949682400).

Almost surely, 2^{1101111221213} is an apocalyptic number.

It is an amenable number.

1101111221213 is a deficient number, since it is larger than the sum of its proper divisors (18083697187).

1101111221213 is a wasteful number, since it uses less digits than its factorization.

1101111221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9716.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1101111221213 its reverse (3121221111011), we get a palindrome (4222332332224).

The spelling of 1101111221213 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, two hundred thirteen".