10321221213 has 12 divisors (see below), whose sum is σ = 14933244508. Its totient is φ = 6869361600.

The previous prime is 10321221199. The next prime is 10321221217. The reversal of 10321221213 is 31212212301.

It can be written as a sum of positive squares in 2 ways, for example, as 6118681284 + 4202539929 = 78222^2 + 64827^2 .

It is not a de Polignac number, because 10321221213 - 2¹² = 10321217117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10321221217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 948670 + ... + 959487.

Almost surely, 2^10321221213 is an apocalyptic number.

It is an amenable number.

10321221213 is a deficient number, since it is larger than the sum of its proper divisors (4612023295).

10321221213 is a wasteful number, since it uses less digits than its factorization.

10321221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908764 (or 1908761 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 10321221213 its reverse (31212212301), we get a palindrome (41533433514).

The spelling of 10321221213 in words is "ten billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred thirteen".