11430211021 has 4 divisors (see below), whose sum is σ = 11432401344. Its totient is φ = 11428020700.

The previous prime is 11430210971. The next prime is 11430211033. The reversal of 11430211021 is 12011203411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12011203411 = 3637 ⋅3302503.

It is a cyclic number.

It is not a de Polignac number, because 11430211021 - 2⁹ = 11430210509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11430210986 and 11430211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11430211321) 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, 1087315 + ... + 1097776.

It is an arithmetic number, because the mean of its divisors is an integer number (2858100336).

Almost surely, 2^11430211021 is an apocalyptic number.

It is an amenable number.

11430211021 is a deficient number, since it is larger than the sum of its proper divisors (2190323).

11430211021 is an equidigital number, since it uses as much as digits as its factorization.

11430211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190322.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11430211021 its reverse (12011203411), we get a palindrome (23441414432).

The spelling of 11430211021 in words is "eleven billion, four hundred thirty million, two hundred eleven thousand, twenty-one".