1101221110811 has 2 divisors, whose sum is σ = 1101221110812. Its totient is φ = 1101221110810.

The previous prime is 1101221110807. The next prime is 1101221110879. The reversal of 1101221110811 is 1180111221011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101221110811 - 2² = 1101221110807 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101221110711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610555405 + 550610555406.

It is an arithmetic number, because the mean of its divisors is an integer number (550610555406).

Almost surely, 2^{1101221110811} is an apocalyptic number.

1101221110811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221110811 is an equidigital number, since it uses as much as digits as its factorization.

1101221110811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 20.

Adding to 1101221110811 its reverse (1180111221011), we get a palindrome (2281332331822).

The spelling of 1101221110811 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred ten thousand, eight hundred eleven".