2101211011212 has 24 divisors (see below), whose sum is σ = 4913414962176. Its totient is φ = 698890917648.

The previous prime is 2101211011183. The next prime is 2101211011231. The reversal of 2101211011212 is 2121101121012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2101211011191 and 2101211011200.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 189088308 + ... + 189099419.

It is an arithmetic number, because the mean of its divisors is an integer number (204725623424).

Almost surely, 2^{2101211011212} is an apocalyptic number.

It is an amenable number.

2101211011212 is an abundant number, since it is smaller than the sum of its proper divisors (2812203950964).

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

2101211011212 is a wasteful number, since it uses less digits than its factorization.

2101211011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378188197 (or 378188195 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2101211011212 its reverse (2121101121012), we get a palindrome (4222312132224).

The spelling of 2101211011212 in words is "two trillion, one hundred one billion, two hundred eleven million, eleven thousand, two hundred twelve".