20121002011002 has 32 divisors (see below), whose sum is σ = 41098833388800. Its totient is φ = 6564200057408.

The previous prime is 20121002011001. The next prime is 20121002011007. The reversal of 20121002011002 is 20011020012102.

It is not an unprimeable number, because it can be changed into a prime (20121002011001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19643524 + ... + 20642432.

It is an arithmetic number, because the mean of its divisors is an integer number (1284338543400).

Almost surely, 2^{20121002011002} is an apocalyptic number.

20121002011002 is an abundant number, since it is smaller than the sum of its proper divisors (20977831377798).

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

20121002011002 is a wasteful number, since it uses less digits than its factorization.

20121002011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070390.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20121002011002 its reverse (20011020012102), we get a palindrome (40132022023104).

The spelling of 20121002011002 in words is "twenty trillion, one hundred twenty-one billion, two million, eleven thousand, two".