10133211221 has 12 divisors (see below), whose sum is σ = 11866733100. Its totient is φ = 8627310720.

The previous prime is 10133211203. The next prime is 10133211229. The reversal of 10133211221 is 12211233101.

It can be written as a sum of positive squares in 2 ways, for example, as 5107960900 + 5025250321 = 71470^2 + 70889^2 .

It is not a de Polignac number, because 10133211221 - 2¹⁴ = 10133194837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10133211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10133211229) 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, 686660 + ... + 701261.

It is an arithmetic number, because the mean of its divisors is an integer number (988894425).

Almost surely, 2^10133211221 is an apocalyptic number.

It is an amenable number.

10133211221 is a deficient number, since it is larger than the sum of its proper divisors (1733521879).

10133211221 is a wasteful number, since it uses less digits than its factorization.

10133211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388084 (or 1388077 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10133211221 its reverse (12211233101), we get a palindrome (22344444322).

The spelling of 10133211221 in words is "ten billion, one hundred thirty-three million, two hundred eleven thousand, two hundred twenty-one".