21025504140214 has 8 divisors (see below), whose sum is σ = 36043721383248. Its totient is φ = 9010930345800.

The previous prime is 21025504140187. The next prime is 21025504140269. The reversal of 21025504140214 is 41204140552012.

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

It is a congruent number.

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, 750910862137 + ... + 750910862164.

It is an arithmetic number, because the mean of its divisors is an integer number (4505465172906).

Almost surely, 2^{21025504140214} is an apocalyptic number.

21025504140214 is a deficient number, since it is larger than the sum of its proper divisors (15018217243034).

21025504140214 is a wasteful number, since it uses less digits than its factorization.

21025504140214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501821724310.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 21025504140214 its reverse (41204140552012), we get a palindrome (62229644692226).

The spelling of 21025504140214 in words is "twenty-one trillion, twenty-five billion, five hundred four million, one hundred forty thousand, two hundred fourteen".