2101220012 has 12 divisors (see below), whose sum is σ = 3680304936. Its totient is φ = 1049704320.

The previous prime is 2101220003. The next prime is 2101220057. The reversal of 2101220012 is 2100221012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2101219975 and 2101220002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221189 + ... + 230492.

It is an arithmetic number, because the mean of its divisors is an integer number (306692078).

Almost surely, 2^2101220012 is an apocalyptic number.

It is an amenable number.

2101220012 is a deficient number, since it is larger than the sum of its proper divisors (1579084924).

2101220012 is a wasteful number, since it uses less digits than its factorization.

2101220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452848 (or 452846 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2101220012 is about 45839.0664390103. The cubic root of 2101220012 is about 1280.8271045903.

Adding to 2101220012 its reverse (2100221012), we get a palindrome (4201441024).

The spelling of 2101220012 in words is "two billion, one hundred one million, two hundred twenty thousand, twelve".