2120200112221 has 4 divisors (see below), whose sum is σ = 2122150619392. Its totient is φ = 2118249605052.

The previous prime is 2120200112209. The next prime is 2120200112281. The reversal of 2120200112221 is 1222110020212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120200112221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120200112195 and 2120200112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120200112281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975251955 + ... + 975254128.

It is an arithmetic number, because the mean of its divisors is an integer number (530537654848).

Almost surely, 2^{2120200112221} is an apocalyptic number.

It is an amenable number.

2120200112221 is a deficient number, since it is larger than the sum of its proper divisors (1950507171).

2120200112221 is a wasteful number, since it uses less digits than its factorization.

2120200112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950507170.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2120200112221 its reverse (1222110020212), we get a palindrome (3342310132433).

The spelling of 2120200112221 in words is "two trillion, one hundred twenty billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".