21038114215 has 8 divisors (see below), whose sum is σ = 25265119968. Its totient is φ = 16817569440.

The previous prime is 21038114179. The next prime is 21038114221. The reversal of 21038114215 is 51241183012.

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

It is not a de Polignac number, because 21038114215 - 2⁷ = 21038114087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1608076 + ... + 1621105.

It is an arithmetic number, because the mean of its divisors is an integer number (3158139996).

Almost surely, 2^21038114215 is an apocalyptic number.

21038114215 is a deficient number, since it is larger than the sum of its proper divisors (4227005753).

21038114215 is a wasteful number, since it uses less digits than its factorization.

21038114215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230489.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 21038114215 its reverse (51241183012), we get a palindrome (72279297227).

The spelling of 21038114215 in words is "twenty-one billion, thirty-eight million, one hundred fourteen thousand, two hundred fifteen".