21430003011 has 4 divisors (see below), whose sum is σ = 28573337352. Its totient is φ = 14286668672.

The previous prime is 21430002941. The next prime is 21430003013. The reversal of 21430003011 is 11030003412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21430003011 - 2⁹ = 21430002499 is a prime.

It is a super-2 number, since 2×21430003011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21430003013) 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, 3571667166 + ... + 3571667171.

It is an arithmetic number, because the mean of its divisors is an integer number (7143334338).

Almost surely, 2^21430003011 is an apocalyptic number.

21430003011 is a deficient number, since it is larger than the sum of its proper divisors (7143334341).

21430003011 is an equidigital number, since it uses as much as digits as its factorization.

21430003011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7143334340.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21430003011 its reverse (11030003412), we get a palindrome (32460006423).

The spelling of 21430003011 in words is "twenty-one billion, four hundred thirty million, three thousand, eleven".