2121202012112 has 20 divisors (see below), whose sum is σ = 4127933878656. Its totient is φ = 1055928753120.

The previous prime is 2121202012103. The next prime is 2121202012117. The reversal of 2121202012112 is 2112102021212.

It is a super-3 number, since 3×2121202012112³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121202012117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292012064 + ... + 292019327.

Almost surely, 2^{2121202012112} is an apocalyptic number.

It is an amenable number.

2121202012112 is a deficient number, since it is larger than the sum of its proper divisors (2006731866544).

2121202012112 is a wasteful number, since it uses less digits than its factorization.

2121202012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584031626 (or 584031620 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121202012112 its reverse (2112102021212), we get a palindrome (4233304033324).

The spelling of 2121202012112 in words is "two trillion, one hundred twenty-one billion, two hundred two million, twelve thousand, one hundred twelve".