2121220322211 has 8 divisors (see below), whose sum is σ = 2828362046224. Its totient is φ = 1414112739840.

The previous prime is 2121220322201. The next prime is 2121220322269. The reversal of 2121220322211 is 1122230221212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121220322211 - 2⁷ = 2121220322083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121220322201) 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, 8390086 + ... + 8639211.

It is an arithmetic number, because the mean of its divisors is an integer number (353545255778).

Almost surely, 2^{2121220322211} is an apocalyptic number.

2121220322211 is a deficient number, since it is larger than the sum of its proper divisors (707141724013).

2121220322211 is a wasteful number, since it uses less digits than its factorization.

2121220322211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17070821.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2121220322211 its reverse (1122230221212), we get a palindrome (3243450543423).

The spelling of 2121220322211 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, three hundred twenty-two thousand, two hundred eleven".