11213775211421 has 4 divisors (see below), whose sum is σ = 11215481773344. Its totient is φ = 11212068649500.

The previous prime is 11213775211367. The next prime is 11213775211423. The reversal of 11213775211421 is 12411257731211.

11213775211421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11213775211421 - 2²² = 11213771017117 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 (11213775211423) 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, 853271105 + ... + 853284246.

It is an arithmetic number, because the mean of its divisors is an integer number (2803870443336).

Almost surely, 2^{11213775211421} is an apocalyptic number.

It is an amenable number.

11213775211421 is a deficient number, since it is larger than the sum of its proper divisors (1706561923).

11213775211421 is an equidigital number, since it uses as much as digits as its factorization.

11213775211421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706561922.

The product of its digits is 23520, while the sum is 38.

The spelling of 11213775211421 in words is "eleven trillion, two hundred thirteen billion, seven hundred seventy-five million, two hundred eleven thousand, four hundred twenty-one".