211321432314425 has 6 divisors (see below), whose sum is σ = 262038576069918. Its totient is φ = 169057145851520.

The previous prime is 211321432314397. The next prime is 211321432314437. The reversal of 211321432314425 is 524413234123112.

It can be written as a sum of positive squares in 3 ways, for example, as 34728721899664 + 176592710414761 = 5893108^2 + 13288819^2 .

It is not a de Polignac number, because 211321432314425 - 2²⁰ = 211321431265849 is a prime.

It is a super-2 number, since 2×211321432314425² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4226428646264 + ... + 4226428646313.

It is an arithmetic number, because the mean of its divisors is an integer number (43673096011653).

Almost surely, 2^{211321432314425} is an apocalyptic number.

211321432314425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

211321432314425 is a deficient number, since it is larger than the sum of its proper divisors (50717143755493).

211321432314425 is an equidigital number, since it uses as much as digits as its factorization.

211321432314425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8452857292587 (or 8452857292582 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

Adding to 211321432314425 its reverse (524413234123112), we get a palindrome (735734666437537).

The spelling of 211321432314425 in words is "two hundred eleven trillion, three hundred twenty-one billion, four hundred thirty-two million, three hundred fourteen thousand, four hundred twenty-five".