2121012121112 has 32 divisors (see below), whose sum is σ = 4006132603200. Its totient is φ = 1052712472224.

The previous prime is 2121012121027. The next prime is 2121012121139. The reversal of 2121012121112 is 2111212101212.

It is a super-2 number, since 2×2121012121112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7152743 + ... + 7443369.

It is an arithmetic number, because the mean of its divisors is an integer number (125191643850).

Almost surely, 2^{2121012121112} is an apocalyptic number.

It is an amenable number.

2121012121112 is a deficient number, since it is larger than the sum of its proper divisors (1885120482088).

2121012121112 is a wasteful number, since it uses less digits than its factorization.

2121012121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297335 (or 297331 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2121012121112 its reverse (2111212101212), we get a palindrome (4232224222324).

The spelling of 2121012121112 in words is "two trillion, one hundred twenty-one billion, twelve million, one hundred twenty-one thousand, one hundred twelve".