2120121222200 has 48 divisors (see below), whose sum is σ = 4929906895080. Its totient is φ = 847940952960.

The previous prime is 2120121222199. The next prime is 2120121222221. The reversal of 2120121222200 is 22221210212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 918467 + ... + 2254733.

Almost surely, 2^{2120121222200} is an apocalyptic number.

2120121222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120121222200 is an abundant number, since it is smaller than the sum of its proper divisors (2809785672880).

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

2120121222200 is a wasteful number, since it uses less digits than its factorization.

2120121222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344216 (or 1344207 counting only the distinct ones).

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

Adding to 2120121222200 its reverse (22221210212), we get a palindrome (2142342432412).

The spelling of 2120121222200 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred".