11231103012221 has 4 divisors (see below), whose sum is σ = 11287540716000. Its totient is φ = 11174665308444.

The previous prime is 11231103012097. The next prime is 11231103012223. The reversal of 11231103012221 is 12221030113211.

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 11231103012221 - 2³⁸ = 10956225105277 is a prime.

It is a super-2 number, since 2×11231103012221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11231103012193 and 11231103012202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231103012223) 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, 28218851591 + ... + 28218851988.

It is an arithmetic number, because the mean of its divisors is an integer number (2821885179000).

Almost surely, 2^{11231103012221} is an apocalyptic number.

It is an amenable number.

11231103012221 is a deficient number, since it is larger than the sum of its proper divisors (56437703779).

11231103012221 is an equidigital number, since it uses as much as digits as its factorization.

11231103012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56437703778.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 11231103012221 its reverse (12221030113211), we get a palindrome (23452133125432).

The spelling of 11231103012221 in words is "eleven trillion, two hundred thirty-one billion, one hundred three million, twelve thousand, two hundred twenty-one".