20010231021011 has 24 divisors (see below), whose sum is σ = 25232396673792. Its totient is φ = 15533100990000.

The previous prime is 20010231020971. The next prime is 20010231021019. The reversal of 20010231021011 is 11012013201002.

It is a de Polignac number, because none of the positive numbers 2^k-20010231021011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20010231021019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44691365 + ... + 45136886.

It is an arithmetic number, because the mean of its divisors is an integer number (1051349861408).

Almost surely, 2^{20010231021011} is an apocalyptic number.

20010231021011 is a deficient number, since it is larger than the sum of its proper divisors (5222165652781).

20010231021011 is a wasteful number, since it uses less digits than its factorization.

20010231021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89828543 (or 89828532 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20010231021011 its reverse (11012013201002), we get a palindrome (31022244222013).

The spelling of 20010231021011 in words is "twenty trillion, ten billion, two hundred thirty-one million, twenty-one thousand, eleven".