21214052150231 has 4 divisors (see below), whose sum is σ = 21214422816864. Its totient is φ = 21213681483600.

The previous prime is 21214052150209. The next prime is 21214052150243. The reversal of 21214052150231 is 13205125041212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21214052150231 is a prime.

It is a super-2 number, since 2×21214052150231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21214052150194 and 21214052150203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214052150531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185247455 + ... + 185361936.

It is an arithmetic number, because the mean of its divisors is an integer number (5303605704216).

Almost surely, 2^{21214052150231} is an apocalyptic number.

21214052150231 is a deficient number, since it is larger than the sum of its proper divisors (370666633).

21214052150231 is an equidigital number, since it uses as much as digits as its factorization.

21214052150231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370666632.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 21214052150231 its reverse (13205125041212), we get a palindrome (34419177191443).

The spelling of 21214052150231 in words is "twenty-one trillion, two hundred fourteen billion, fifty-two million, one hundred fifty thousand, two hundred thirty-one".