22031102213 has 4 divisors (see below), whose sum is σ = 23327049420. Its totient is φ = 20735155008.

The previous prime is 22031102209. The next prime is 22031102263. The reversal of 22031102213 is 31220113022.

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 16614436609 + 5416665604 = 128897^2 + 73598^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031102213 - 2² = 22031102209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1295947189 = 22031102213 / (2 + 2 + 0 + 3 + 1 + 1 + 0 + 2 + 2 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22031102191 and 22031102200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031102263) 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, 647973578 + ... + 647973611.

It is an arithmetic number, because the mean of its divisors is an integer number (5831762355).

Almost surely, 2^22031102213 is an apocalyptic number.

It is an amenable number.

22031102213 is a deficient number, since it is larger than the sum of its proper divisors (1295947207).

22031102213 is a wasteful number, since it uses less digits than its factorization.

22031102213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295947206.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22031102213 its reverse (31220113022), we get a palindrome (53251215235).

The spelling of 22031102213 in words is "twenty-two billion, thirty-one million, one hundred two thousand, two hundred thirteen".