2101021200012 has 96 divisors (see below), whose sum is σ = 5695237703680. Its totient is φ = 590381809920.

The previous prime is 2101021200011. The next prime is 2101021200023. The reversal of 2101021200012 is 2100021201012.

It is a super-3 number, since 3×2101021200012³ (a number of 38 digits) contains 333 as substring.

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 (2101021200011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56955318 + ... + 56992194.

Almost surely, 2^{2101021200012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101021200012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2847618851840).

2101021200012 is an abundant number, since it is smaller than the sum of its proper divisors (3594216503668).

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

2101021200012 is a wasteful number, since it uses less digits than its factorization.

2101021200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48071 (or 48069 counting only the distinct ones).

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

Adding to 2101021200012 its reverse (2100021201012), we get a palindrome (4201042401024).

The spelling of 2101021200012 in words is "two trillion, one hundred one billion, twenty-one million, two hundred thousand, twelve".