2121001212012 has 24 divisors (see below), whose sum is σ = 5119658098800. Its totient is φ = 682621079616.

The previous prime is 2121001212007. The next prime is 2121001212019. The reversal of 2121001212012 is 2102121001212.

It is a super-2 number, since 2×2121001212012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121001211982 and 2121001212000.

It is not an unprimeable number, because it can be changed into a prime (2121001212019) 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, 3047415187 + ... + 3047415882.

It is an arithmetic number, because the mean of its divisors is an integer number (213319087450).

Almost surely, 2^{2121001212012} is an apocalyptic number.

It is an amenable number.

2121001212012 is an abundant number, since it is smaller than the sum of its proper divisors (2998656886788).

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

2121001212012 is a wasteful number, since it uses less digits than its factorization.

2121001212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6094831105 (or 6094831103 counting only the distinct ones).

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

Adding to 2121001212012 its reverse (2102121001212), we get a palindrome (4223122213224).

The spelling of 2121001212012 in words is "two trillion, one hundred twenty-one billion, one million, two hundred twelve thousand, twelve".