20010231012 has 48 divisors (see below), whose sum is σ = 49757202432. Its totient is φ = 6244323360.

The previous prime is 20010231011. The next prime is 20010231041. The reversal of 20010231012 is 21013201002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20010231011) 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, 758314 + ... + 784257.

It is an arithmetic number, because the mean of its divisors is an integer number (1036608384).

Almost surely, 2^20010231012 is an apocalyptic number.

It is an amenable number.

20010231012 is an abundant number, since it is smaller than the sum of its proper divisors (29746971420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20010231012 is a wasteful number, since it uses less digits than its factorization.

20010231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542648 (or 1542646 counting only the distinct ones).

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

Adding to 20010231012 its reverse (21013201002), we get a palindrome (41023432014).

The spelling of 20010231012 in words is "twenty billion, ten million, two hundred thirty-one thousand, twelve".