21350422514 has 8 divisors (see below), whose sum is σ = 33129966060. Its totient is φ = 10307100496.

The previous prime is 21350422477. The next prime is 21350422529. The reversal of 21350422514 is 41522405312.

It can be written as a sum of positive squares in 2 ways, for example, as 19478389225 + 1872033289 = 139565^2 + 43267^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184055309 + ... + 184055424.

Almost surely, 2^21350422514 is an apocalyptic number.

21350422514 is a deficient number, since it is larger than the sum of its proper divisors (11779543546).

21350422514 is a wasteful number, since it uses less digits than its factorization.

21350422514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368110764.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 21350422514 its reverse (41522405312), we get a palindrome (62872827826).

The spelling of 21350422514 in words is "twenty-one billion, three hundred fifty million, four hundred twenty-two thousand, five hundred fourteen".