2121212121212 has 12 divisors (see below), whose sum is σ = 3712408685160. Its totient is φ = 1060523925456.

The previous prime is 2121212121181. The next prime is 2121212121233.

2121212121212 is nontrivially palindromic in base 10.

2121212121212 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

2121212121212 is an undulating number in base 10.

2121212121212 is a modest number, since divided by 12121212 gives 21212 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20475662 + ... + 20578997.

It is an arithmetic number, because the mean of its divisors is an integer number (309367390430).

Almost surely, 2^{2121212121212} is an apocalyptic number.

It is an amenable number.

2121212121212 is a deficient number, since it is larger than the sum of its proper divisors (1591196563948).

2121212121212 is a wasteful number, since it uses less digits than its factorization.

2121212121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41067580 (or 41067578 counting only the distinct ones).

The product of its digits is 128, while the sum is 20.

The spelling of 2121212121212 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".