10111221311 has 4 divisors (see below), whose sum is σ = 10111856712. Its totient is φ = 10110585912.

The previous prime is 10111221301. The next prime is 10111221331. The reversal of 10111221311 is 11312211101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11312211101 = 97 ⋅116620733.

It is a cyclic number.

It is not a de Polignac number, because 10111221311 - 2⁶ = 10111221247 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 (10111221301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293201 + ... + 325866.

It is an arithmetic number, because the mean of its divisors is an integer number (2527964178).

Almost surely, 2^10111221311 is an apocalyptic number.

10111221311 is a deficient number, since it is larger than the sum of its proper divisors (635401).

10111221311 is an equidigital number, since it uses as much as digits as its factorization.

10111221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635400.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 10111221311 its reverse (11312211101), we get a palindrome (21423432412).

The spelling of 10111221311 in words is "ten billion, one hundred eleven million, two hundred twenty-one thousand, three hundred eleven".