2101213212 has 48 divisors (see below), whose sum is σ = 5796456960. Its totient is φ = 579644352.

The previous prime is 2101213123. The next prime is 2101213237. The reversal of 2101213212 is 2123121012.

It is a junction number, because it is equal to n+sod(n) for n = 2101213191 and 2101213200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428848 + ... + 433719.

It is an arithmetic number, because the mean of its divisors is an integer number (120759520).

Almost surely, 2^2101213212 is an apocalyptic number.

It is an amenable number.

2101213212 is an abundant number, since it is smaller than the sum of its proper divisors (3695243748).

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

2101213212 is a wasteful number, since it uses less digits than its factorization.

2101213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862610 (or 862608 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2101213212 is about 45838.9922664100. The cubic root of 2101213212 is about 1280.8257229115.

Adding to 2101213212 its reverse (2123121012), we get a palindrome (4224334224).

The spelling of 2101213212 in words is "two billion, one hundred one million, two hundred thirteen thousand, two hundred twelve".