1101231221311 has 16 divisors (see below), whose sum is σ = 1197977558400. Its totient is φ = 1006219471968.

The previous prime is 1101231221303. The next prime is 1101231221317. The reversal of 1101231221311 is 1131221321011.

It is a cyclic number.

It is not a de Polignac number, because 1101231221311 - 2³ = 1101231221303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101231221317) 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, 1436860 + ... + 2065678.

It is an arithmetic number, because the mean of its divisors is an integer number (74873597400).

Almost surely, 2^{1101231221311} is an apocalyptic number.

1101231221311 is a deficient number, since it is larger than the sum of its proper divisors (96746337089).

1101231221311 is a wasteful number, since it uses less digits than its factorization.

1101231221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630198.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1101231221311 its reverse (1131221321011), we get a palindrome (2232452542322).

The spelling of 1101231221311 in words is "one trillion, one hundred one billion, two hundred thirty-one million, two hundred twenty-one thousand, three hundred eleven".