2101210100012 has 24 divisors (see below), whose sum is σ = 3683886662736. Its totient is φ = 1048671546368.

The previous prime is 2101210099867. The next prime is 2101210100053. The reversal of 2101210100012 is 2100010121012.

It is a junction number, because it is equal to n+sod(n) for n = 2101210099966 and 2101210100002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18240548 + ... + 18355380.

It is an arithmetic number, because the mean of its divisors is an integer number (153495277614).

Almost surely, 2^{2101210100012} is an apocalyptic number.

It is an amenable number.

2101210100012 is a deficient number, since it is larger than the sum of its proper divisors (1582676562724).

2101210100012 is a wasteful number, since it uses less digits than its factorization.

2101210100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123217 (or 123215 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2101210100012 its reverse (2100010121012), we get a palindrome (4201220221024).

The spelling of 2101210100012 in words is "two trillion, one hundred one billion, two hundred ten million, one hundred thousand, twelve".