20020312229 has 4 divisors (see below), whose sum is σ = 20020637484. Its totient is φ = 20019986976.

The previous prime is 20020312219. The next prime is 20020312231. The reversal of 20020312229 is 92221302002.

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 9569339329 + 10450972900 = 97823^2 + 102230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020312229 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 (20020312219) 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 3 ways as a sum of consecutive naturals, for example, 38942 + ... + 203855.

It is an arithmetic number, because the mean of its divisors is an integer number (5005159371).

Almost surely, 2^20020312229 is an apocalyptic number.

It is an amenable number.

20020312229 is a deficient number, since it is larger than the sum of its proper divisors (325255).

20020312229 is an equidigital number, since it uses as much as digits as its factorization.

20020312229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325254.

The product of its (nonzero) digits is 864, while the sum is 23.

The spelling of 20020312229 in words is "twenty billion, twenty million, three hundred twelve thousand, two hundred twenty-nine".