21224230425231 has 8 divisors (see below), whose sum is σ = 28299011104944. Its totient is φ = 14149468347840.

The previous prime is 21224230425157. The next prime is 21224230425287. The reversal of 21224230425231 is 13252403242212.

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

It is not a de Polignac number, because 21224230425231 - 2²⁹ = 21223693554319 is a prime.

It is a super-2 number, since 2×21224230425231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21224230425192 and 21224230425201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21224230425631) 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, 1725556 + ... + 6739881.

It is an arithmetic number, because the mean of its divisors is an integer number (3537376388118).

Almost surely, 2^{21224230425231} is an apocalyptic number.

21224230425231 is a deficient number, since it is larger than the sum of its proper divisors (7074780679713).

21224230425231 is an equidigital number, since it uses as much as digits as its factorization.

21224230425231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301161.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 21224230425231 its reverse (13252403242212), we get a palindrome (34476633667443).

The spelling of 21224230425231 in words is "twenty-one trillion, two hundred twenty-four billion, two hundred thirty million, four hundred twenty-five thousand, two hundred thirty-one".