11123410261621 has 4 divisors (see below), whose sum is σ = 12712468870432. Its totient is φ = 9534351652812.

The previous prime is 11123410261597. The next prime is 11123410261637. The reversal of 11123410261621 is 12616201432111.

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 not a de Polignac number, because 11123410261621 - 2¹¹ = 11123410259573 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 (11123410261121) 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, 794529304395 + ... + 794529304408.

It is an arithmetic number, because the mean of its divisors is an integer number (3178117217608).

Almost surely, 2^{11123410261621} is an apocalyptic number.

It is an amenable number.

11123410261621 is a deficient number, since it is larger than the sum of its proper divisors (1589058608811).

11123410261621 is an equidigital number, since it uses as much as digits as its factorization.

11123410261621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589058608810.

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 11123410261621 its reverse (12616201432111), we get a palindrome (23739611693732).

The spelling of 11123410261621 in words is "eleven trillion, one hundred twenty-three billion, four hundred ten million, two hundred sixty-one thousand, six hundred twenty-one".