20011012321012 has 12 divisors (see below), whose sum is σ = 35764362446400. Its totient is φ = 9792623050616.

The previous prime is 20011012321007. The next prime is 20011012321019. The reversal of 20011012321012 is 21012321011002.

It is a super-2 number, since 2×20011012321012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011012321019) 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, 53220777262 + ... + 53220777637.

It is an arithmetic number, because the mean of its divisors is an integer number (2980363537200).

Almost surely, 2^{20011012321012} is an apocalyptic number.

It is an amenable number.

20011012321012 is a deficient number, since it is larger than the sum of its proper divisors (15753350125388).

20011012321012 is a wasteful number, since it uses less digits than its factorization.

20011012321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106441554950 (or 106441554948 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20011012321012 its reverse (21012321011002), we get a palindrome (41023333332014).

The spelling of 20011012321012 in words is "twenty trillion, eleven billion, twelve million, three hundred twenty-one thousand, twelve".