21471095333 has 4 divisors (see below), whose sum is σ = 21607854060. Its totient is φ = 21334336608.

The previous prime is 21471095329. The next prime is 21471095417. The reversal of 21471095333 is 33359017412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12358101889 + 9112993444 = 111167^2 + 95462^2 .

It is a cyclic number.

It is not a de Polignac number, because 21471095333 - 2² = 21471095329 is a prime.

It is a super-2 number, since 2×21471095333² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21471095323) 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, 68379128 + ... + 68379441.

It is an arithmetic number, because the mean of its divisors is an integer number (5401963515).

Almost surely, 2^21471095333 is an apocalyptic number.

It is an amenable number.

21471095333 is a deficient number, since it is larger than the sum of its proper divisors (136758727).

21471095333 is a wasteful number, since it uses less digits than its factorization.

21471095333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136758726.

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 21471095333 in words is "twenty-one billion, four hundred seventy-one million, ninety-five thousand, three hundred thirty-three".