2120121012200 has 24 divisors (see below), whose sum is σ = 4929281353830. Its totient is φ = 848048404800.

The previous prime is 2120121012179. The next prime is 2120121012203. The reversal of 2120121012200 is 22101210212.

It can be written as a sum of positive squares in 3 ways, for example, as 1872907205764 + 247213806436 = 1368542^2 + 497206^2 .

It is not an unprimeable number, because it can be changed into a prime (2120121012203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5300302331 + ... + 5300302730.

Almost surely, 2^{2120121012200} is an apocalyptic number.

2120121012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120121012200 is an abundant number, since it is smaller than the sum of its proper divisors (2809160341630).

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

2120121012200 is a wasteful number, since it uses less digits than its factorization.

2120121012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600605077 (or 10600605068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2120121012200 its reverse (22101210212), we get a palindrome (2142222222412).

The spelling of 2120121012200 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, twelve thousand, two hundred".