21294200174 has 8 divisors (see below), whose sum is σ = 34398323400. Its totient is φ = 9828092376.

The previous prime is 21294200129. The next prime is 21294200177. The reversal of 21294200174 is 47100249212.

It is a happy number.

21294200174 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×21294200174² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21294200174.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21294200177) 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, 409503824 + ... + 409503875.

It is an arithmetic number, because the mean of its divisors is an integer number (4299790425).

Almost surely, 2^21294200174 is an apocalyptic number.

21294200174 is a deficient number, since it is larger than the sum of its proper divisors (13104123226).

21294200174 is a wasteful number, since it uses less digits than its factorization.

21294200174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819007714.

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 21294200174 its reverse (47100249212), we get a palindrome (68394449386).

The spelling of 21294200174 in words is "twenty-one billion, two hundred ninety-four million, two hundred thousand, one hundred seventy-four".