21523340150211 has 8 divisors (see below), whose sum is σ = 28923753693184. Its totient is φ = 14235910020360.

The previous prime is 21523340150201. The next prime is 21523340150237. The reversal of 21523340150211 is 11205104332512.

It is a happy number.

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

It is not a de Polignac number, because 21523340150211 - 2¹⁵ = 21523340117443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21523340150201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28245852835 + ... + 28245853596.

It is an arithmetic number, because the mean of its divisors is an integer number (3615469211648).

Almost surely, 2^{21523340150211} is an apocalyptic number.

21523340150211 is a deficient number, since it is larger than the sum of its proper divisors (7400413542973).

21523340150211 is a wasteful number, since it uses less digits than its factorization.

21523340150211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56491706561.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 21523340150211 its reverse (11205104332512), we get a palindrome (32728444482723).

The spelling of 21523340150211 in words is "twenty-one trillion, five hundred twenty-three billion, three hundred forty million, one hundred fifty thousand, two hundred eleven".