22031445133 has 4 divisors (see below), whose sum is σ = 22226413788. Its totient is φ = 21836476480.

The previous prime is 22031445119. The next prime is 22031445143. The reversal of 22031445133 is 33154413022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33154413022 = 2 ⋅16577206511.

It can be written as a sum of positive squares in 2 ways, for example, as 480617929 + 21550827204 = 21923^2 + 146802^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031445133 - 2⁵ = 22031445101 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 (22031445143) 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, 97484158 + ... + 97484383.

It is an arithmetic number, because the mean of its divisors is an integer number (5556603447).

Almost surely, 2^22031445133 is an apocalyptic number.

It is an amenable number.

22031445133 is a deficient number, since it is larger than the sum of its proper divisors (194968655).

22031445133 is a wasteful number, since it uses less digits than its factorization.

22031445133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194968654.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 22031445133 its reverse (33154413022), we get a palindrome (55185858155).

The spelling of 22031445133 in words is "twenty-two billion, thirty-one million, four hundred forty-five thousand, one hundred thirty-three".