2021222012211 has 24 divisors (see below), whose sum is σ = 3091357694880. Its totient is φ = 1268186155776.

The previous prime is 2021222012207. The next prime is 2021222012221. The reversal of 2021222012211 is 1122102221202.

It is a happy number.

2021222012211 is a `hidden beast` number, since 20 + 212 + 220 + 1 + 2 + 211 = 666.

It is not a de Polignac number, because 2021222012211 - 2² = 2021222012207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021222012221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7023786 + ... + 7305888.

It is an arithmetic number, because the mean of its divisors is an integer number (128806570620).

Almost surely, 2^{2021222012211} is an apocalyptic number.

2021222012211 is a deficient number, since it is larger than the sum of its proper divisors (1070135682669).

2021222012211 is a wasteful number, since it uses less digits than its factorization.

2021222012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328955 (or 328952 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2021222012211 its reverse (1122102221202), we get a palindrome (3143324233413).

The spelling of 2021222012211 in words is "two trillion, twenty-one billion, two hundred twenty-two million, twelve thousand, two hundred eleven".