21430011227 has 8 divisors (see below), whose sum is σ = 21692156400. Its totient is φ = 21168340864.

The previous prime is 21430011223. The next prime is 21430011263. The reversal of 21430011227 is 72211003412.

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

It is a cyclic number.

It is not a de Polignac number, because 21430011227 - 2² = 21430011223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21430011223) 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, 27458 + ... + 208839.

It is an arithmetic number, because the mean of its divisors is an integer number (2711519550).

Almost surely, 2^21430011227 is an apocalyptic number.

21430011227 is a deficient number, since it is larger than the sum of its proper divisors (262145173).

21430011227 is a wasteful number, since it uses less digits than its factorization.

21430011227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237405.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 21430011227 its reverse (72211003412), we get a palindrome (93641014639).

The spelling of 21430011227 in words is "twenty-one billion, four hundred thirty million, eleven thousand, two hundred twenty-seven".