20011210113203 has 16 divisors (see below), whose sum is σ = 21586350804480. Its totient is φ = 18482430527616.

The previous prime is 20011210113199. The next prime is 20011210113217. The reversal of 20011210113203 is 30231101211002.

It is a cyclic number.

It is not a de Polignac number, because 20011210113203 - 2² = 20011210113199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (20011210113403) 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 15 ways as a sum of consecutive naturals, for example, 33101783 + ... + 33700896.

It is an arithmetic number, because the mean of its divisors is an integer number (1349146925280).

Almost surely, 2^{20011210113203} is an apocalyptic number.

20011210113203 is a deficient number, since it is larger than the sum of its proper divisors (1575140691277).

20011210113203 is a wasteful number, since it uses less digits than its factorization.

20011210113203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66803026.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20011210113203 its reverse (30231101211002), we get a palindrome (50242311324205).

The spelling of 20011210113203 in words is "twenty trillion, eleven billion, two hundred ten million, one hundred thirteen thousand, two hundred three".