2120200221218 has 4 divisors (see below), whose sum is σ = 3180300331830. Its totient is φ = 1060100110608.

The previous prime is 2120200221211. The next prime is 2120200221247. The reversal of 2120200221218 is 8121220020212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1571796286369 + 548403934849 = 1253713^2 + 740543^2 .

It is a super-2 number, since 2×2120200221218² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120200221193 and 2120200221202.

It is not an unprimeable number, because it can be changed into a prime (2120200221211) 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 as a sum of consecutive naturals, namely, 530050055303 + ... + 530050055306.

Almost surely, 2^{2120200221218} is an apocalyptic number.

2120200221218 is a deficient number, since it is larger than the sum of its proper divisors (1060100110612).

2120200221218 is a wasteful number, since it uses less digits than its factorization.

2120200221218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060100110611.

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 2120200221218 in words is "two trillion, one hundred twenty billion, two hundred million, two hundred twenty-one thousand, two hundred eighteen".