2021120102012 has 48 divisors (see below), whose sum is σ = 4063891813632. Its totient is φ = 870535226880.

The previous prime is 2021120101997. The next prime is 2021120102017. The reversal of 2021120102012 is 2102010211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021120102017) 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, 9224213 + ... + 9440780.

It is an arithmetic number, because the mean of its divisors is an integer number (84664412784).

Almost surely, 2^{2021120102012} is an apocalyptic number.

2021120102012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2021120102012 is an abundant number, since it is smaller than the sum of its proper divisors (2042771711620).

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

2021120102012 is a wasteful number, since it uses less digits than its factorization.

2021120102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18665138 (or 18665136 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021120102012 its reverse (2102010211202), we get a palindrome (4123130313214).

The spelling of 2021120102012 in words is "two trillion, twenty-one billion, one hundred twenty million, one hundred two thousand, twelve".