20011012203 has 32 divisors (see below), whose sum is σ = 32870656000. Its totient is φ = 10544950656.

The previous prime is 20011012157. The next prime is 20011012267. The reversal of 20011012203 is 30221011002.

It is not a de Polignac number, because 20011012203 - 2¹⁶ = 20010946667 is a prime.

It is a super-2 number, since 2×20011012203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20011013203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248373 + ... + 318921.

It is an arithmetic number, because the mean of its divisors is an integer number (1027208000).

Almost surely, 2^20011012203 is an apocalyptic number.

20011012203 is a deficient number, since it is larger than the sum of its proper divisors (12859643797).

20011012203 is a wasteful number, since it uses less digits than its factorization.

20011012203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71611.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20011012203 its reverse (30221011002), we get a palindrome (50232023205).

The spelling of 20011012203 in words is "twenty billion, eleven million, twelve thousand, two hundred three".