20100322213 has 4 divisors (see below), whose sum is σ = 20326168620. Its totient is φ = 19874475808.

The previous prime is 20100322189. The next prime is 20100322217. The reversal of 20100322213 is 31222300102.

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 10205444484 + 9894877729 = 101022^2 + 99473^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100322213 - 2²⁵ = 20066767781 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 (20100322217) 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, 112923070 + ... + 112923247.

It is an arithmetic number, because the mean of its divisors is an integer number (5081542155).

Almost surely, 2^20100322213 is an apocalyptic number.

It is an amenable number.

20100322213 is a deficient number, since it is larger than the sum of its proper divisors (225846407).

20100322213 is an equidigital number, since it uses as much as digits as its factorization.

20100322213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225846406.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20100322213 its reverse (31222300102), we get a palindrome (51322622315).

The spelling of 20100322213 in words is "twenty billion, one hundred million, three hundred twenty-two thousand, two hundred thirteen".