2102120101212 has 24 divisors (see below), whose sum is σ = 4933299201936. Its totient is φ = 696656371968.

The previous prime is 2102120101201. The next prime is 2102120101219. The reversal of 2102120101212 is 2121010212012.

It is a junction number, because it is equal to n+sod(n) for n = 2102120101191 and 2102120101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102120101219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506288893 + ... + 506293044.

It is an arithmetic number, because the mean of its divisors is an integer number (205554133414).

Almost surely, 2^{2102120101212} is an apocalyptic number.

It is an amenable number.

2102120101212 is an abundant number, since it is smaller than the sum of its proper divisors (2831179100724).

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

2102120101212 is a wasteful number, since it uses less digits than its factorization.

2102120101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012582117 (or 1012582115 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2102120101212 its reverse (2121010212012), we get a palindrome (4223130313224).

The spelling of 2102120101212 in words is "two trillion, one hundred two billion, one hundred twenty million, one hundred one thousand, two hundred twelve".