10211251321 has 4 divisors (see below), whose sum is σ = 10212354292. Its totient is φ = 10210148352.

The previous prime is 10211251319. The next prime is 10211251361. The reversal of 10211251321 is 12315211201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8412558400 + 1798692921 = 91720^2 + 42411^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211251321 - 2¹ = 10211251319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10211251361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537480 + ... + 556153.

It is an arithmetic number, because the mean of its divisors is an integer number (2553088573).

Almost surely, 2^10211251321 is an apocalyptic number.

It is an amenable number.

10211251321 is a deficient number, since it is larger than the sum of its proper divisors (1102971).

10211251321 is an equidigital number, since it uses as much as digits as its factorization.

10211251321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102970.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 10211251321 its reverse (12315211201), we get a palindrome (22526462522).

The spelling of 10211251321 in words is "ten billion, two hundred eleven million, two hundred fifty-one thousand, three hundred twenty-one".