11211321101 has 4 divisors (see below), whose sum is σ = 11369227104. Its totient is φ = 11053415100.

The previous prime is 11211321097. The next prime is 11211321131. The reversal of 11211321101 is 10112311211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11211321101 - 2² = 11211321097 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 (11211321131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78952895 + ... + 78953036.

It is an arithmetic number, because the mean of its divisors is an integer number (2842306776).

Almost surely, 2^11211321101 is an apocalyptic number.

It is an amenable number.

11211321101 is a deficient number, since it is larger than the sum of its proper divisors (157906003).

11211321101 is an equidigital number, since it uses as much as digits as its factorization.

11211321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157906002.

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

Adding to 11211321101 its reverse (10112311211), we get a palindrome (21323632312).

The spelling of 11211321101 in words is "eleven billion, two hundred eleven million, three hundred twenty-one thousand, one hundred one".