21032022213 has 6 divisors (see below), whose sum is σ = 30379587654. Its totient is φ = 14021348136.

The previous prime is 21032022211. The next prime is 21032022217. The reversal of 21032022213 is 31222023012.

It can be written as a sum of positive squares in only one way, i.e., 20966460804 + 65561409 = 144798^2 + 8097^2 .

It is not a de Polignac number, because 21032022213 - 2¹ = 21032022211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032022211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1168445670 + ... + 1168445687.

It is an arithmetic number, because the mean of its divisors is an integer number (5063264609).

Almost surely, 2^21032022213 is an apocalyptic number.

It is an amenable number.

21032022213 is a deficient number, since it is larger than the sum of its proper divisors (9347565441).

21032022213 is a wasteful number, since it uses less digits than its factorization.

21032022213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336891363 (or 2336891360 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21032022213 its reverse (31222023012), we get a palindrome (52254045225).

The spelling of 21032022213 in words is "twenty-one billion, thirty-two million, twenty-two thousand, two hundred thirteen".