20212203113 has 4 divisors (see below), whose sum is σ = 20316929748. Its totient is φ = 20107476480.

The previous prime is 20212203101. The next prime is 20212203161. The reversal of 20212203113 is 31130221202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31130221202 = 2 ⋅15565110601.

It can be written as a sum of positive squares in 2 ways, for example, as 4433828569 + 15778374544 = 66587^2 + 125612^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212203113 - 2⁶ = 20212203049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20212203091 and 20212203100.

It is not an unprimeable number, because it can be changed into a prime (20212203163) 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, 52363028 + ... + 52363413.

It is an arithmetic number, because the mean of its divisors is an integer number (5079232437).

Almost surely, 2^20212203113 is an apocalyptic number.

It is an amenable number.

20212203113 is a deficient number, since it is larger than the sum of its proper divisors (104726635).

20212203113 is a wasteful number, since it uses less digits than its factorization.

20212203113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104726634.

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

Adding to 20212203113 its reverse (31130221202), we get a palindrome (51342424315).

The spelling of 20212203113 in words is "twenty billion, two hundred twelve million, two hundred three thousand, one hundred thirteen".