21227114577 has 8 divisors (see below), whose sum is σ = 28782528480. Its totient is φ = 13911555200.

The previous prime is 21227114567. The next prime is 21227114591. The reversal of 21227114577 is 77541172212.

It is a happy number.

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-21227114577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21227114527) 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, 59963424 + ... + 59963777.

It is an arithmetic number, because the mean of its divisors is an integer number (3597816060).

Almost surely, 2^21227114577 is an apocalyptic number.

It is an amenable number.

21227114577 is a deficient number, since it is larger than the sum of its proper divisors (7555413903).

21227114577 is a wasteful number, since it uses less digits than its factorization.

21227114577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119927263.

The product of its digits is 54880, while the sum is 39.

Adding to 21227114577 its reverse (77541172212), we get a palindrome (98768286789).

The spelling of 21227114577 in words is "twenty-one billion, two hundred twenty-seven million, one hundred fourteen thousand, five hundred seventy-seven".