11223132131021 has 8 divisors (see below), whose sum is σ = 11527534761720. Its totient is φ = 10918786065408.

The previous prime is 11223132130981. The next prime is 11223132131023. The reversal of 11223132131021 is 12013123132211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3816357602500 + 7406774528521 = 1953550^2 + 2721539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11223132131021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223132131023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13738916 + ... + 14532861.

It is an arithmetic number, because the mean of its divisors is an integer number (1440941845215).

Almost surely, 2^{11223132131021} is an apocalyptic number.

It is an amenable number.

11223132131021 is a deficient number, since it is larger than the sum of its proper divisors (304402630699).

11223132131021 is a wasteful number, since it uses less digits than its factorization.

11223132131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28282543.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11223132131021 its reverse (12013123132211), we get a palindrome (23236255263232).

The spelling of 11223132131021 in words is "eleven trillion, two hundred twenty-three billion, one hundred thirty-two million, one hundred thirty-one thousand, twenty-one".