21227466623 has 4 divisors (see below), whose sum is σ = 23157236328. Its totient is φ = 19297696920.

The previous prime is 21227466607. The next prime is 21227466739. The reversal of 21227466623 is 32666472212.

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 21227466623 - 2⁴ = 21227466607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21227466223) 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, 964884836 + ... + 964884857.

It is an arithmetic number, because the mean of its divisors is an integer number (5789309082).

Almost surely, 2^21227466623 is an apocalyptic number.

21227466623 is a deficient number, since it is larger than the sum of its proper divisors (1929769705).

21227466623 is a wasteful number, since it uses less digits than its factorization.

21227466623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929769704.

The product of its digits is 290304, while the sum is 41.

The spelling of 21227466623 in words is "twenty-one billion, two hundred twenty-seven million, four hundred sixty-six thousand, six hundred twenty-three".