321121012440425 has 12 divisors (see below), whose sum is σ = 421612999863516. Its totient is φ = 241785232896000.

The previous prime is 321121012440407. The next prime is 321121012440439. The reversal of 321121012440425 is 524044210121123.

It can be written as a sum of positive squares in 6 ways, for example, as 5029878222121 + 316091134218304 = 2242739^2 + 17778952^2 .

It is not a de Polignac number, because 321121012440425 - 2²⁸ = 321120744004969 is a prime.

It is a super-2 number, since 2×321121012440425² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321121012440391 and 321121012440400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 377789425976 + ... + 377789426825.

It is an arithmetic number, because the mean of its divisors is an integer number (35134416655293).

Almost surely, 2^{321121012440425} is an apocalyptic number.

It is an amenable number.

321121012440425 is a deficient number, since it is larger than the sum of its proper divisors (100491987423091).

321121012440425 is a wasteful number, since it uses less digits than its factorization.

321121012440425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755578852828 (or 755578852823 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 321121012440425 its reverse (524044210121123), we get a palindrome (845165222561548).

The spelling of 321121012440425 in words is "three hundred twenty-one trillion, one hundred twenty-one billion, twelve million, four hundred forty thousand, four hundred twenty-five".