2121202202112 has 480 divisors, whose sum is σ = 7191686399040. Its totient is φ = 589375733760.

The previous prime is 2121202202099. The next prime is 2121202202117. The reversal of 2121202202112 is 2112022021212.

It is a happy number.

2121202202112 is a `hidden beast` number, since 21 + 212 + 0 + 220 + 211 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121202202117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 175111768 + ... + 175123880.

It is an arithmetic number, because the mean of its divisors is an integer number (14982679998).

Almost surely, 2^{2121202202112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121202202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3595843199520).

2121202202112 is an abundant number, since it is smaller than the sum of its proper divisors (5070484196928).

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

2121202202112 is a wasteful number, since it uses less digits than its factorization.

2121202202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12294 (or 12275 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2121202202112 its reverse (2112022021212), we get a palindrome (4233224223324).

The spelling of 2121202202112 in words is "two trillion, one hundred twenty-one billion, two hundred two million, two hundred two thousand, one hundred twelve".