2121202022120 has 32 divisors (see below), whose sum is σ = 4773632292000. Its totient is φ = 848315876928.

The previous prime is 2121202022117. The next prime is 2121202022123. The reversal of 2121202022120 is 212202021212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2121202022117) and next prime (2121202022123).

It is not an unprimeable number, because it can be changed into a prime (2121202022123) 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, 4945670 + ... + 5357429.

It is an arithmetic number, because the mean of its divisors is an integer number (149176009125).

Almost surely, 2^{2121202022120} is an apocalyptic number.

2121202022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121202022120 is an abundant number, since it is smaller than the sum of its proper divisors (2652430269880).

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

2121202022120 is a wasteful number, since it uses less digits than its factorization.

2121202022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10308257 (or 10308253 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2121202022120 its reverse (212202021212), we get a palindrome (2333404043332).

The spelling of 2121202022120 in words is "two trillion, one hundred twenty-one billion, two hundred two million, twenty-two thousand, one hundred twenty".