2121202022112 has 192 divisors, whose sum is σ = 6703116456960. Its totient is φ = 649998784512.

The previous prime is 2121202022089. The next prime is 2121202022113. The reversal of 2121202022112 is 2112202021212.

It is a happy number.

It is a super-2 number, since 2×2121202022112² (a number of 25 digits) contains 22 as substring.

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 (2121202022113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1047688 + ... + 2310855.

It is an arithmetic number, because the mean of its divisors is an integer number (34912064880).

Almost surely, 2^{2121202022112} is an apocalyptic number.

It is an amenable number.

2121202022112 is an abundant number, since it is smaller than the sum of its proper divisors (4581914434848).

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

2121202022112 is a wasteful number, since it uses less digits than its factorization.

2121202022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358622 (or 3358608 counting only the distinct ones).

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

Adding to 2121202022112 its reverse (2112202021212), we get a palindrome (4233404043324).

The spelling of 2121202022112 in words is "two trillion, one hundred twenty-one billion, two hundred two million, twenty-two thousand, one hundred twelve".