11204143030421 has 4 divisors (see below), whose sum is σ = 12222701487744. Its totient is φ = 10185584573100.

The previous prime is 11204143030397. The next prime is 11204143030427. The reversal of 11204143030421 is 12403034140211.

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 11204143030421 - 2¹⁴ = 11204143014037 is a prime.

It is a super-2 number, since 2×11204143030421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11204143030427) 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, 509279228645 + ... + 509279228666.

It is an arithmetic number, because the mean of its divisors is an integer number (3055675371936).

Almost surely, 2^{11204143030421} is an apocalyptic number.

11204143030421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11204143030421 is a deficient number, since it is larger than the sum of its proper divisors (1018558457323).

11204143030421 is a wasteful number, since it uses less digits than its factorization.

11204143030421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018558457322.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 11204143030421 its reverse (12403034140211), we get a palindrome (23607177170632).

The spelling of 11204143030421 in words is "eleven trillion, two hundred four billion, one hundred forty-three million, thirty thousand, four hundred twenty-one".