2021012222211 has 12 divisors (see below), whose sum is σ = 2925544936288. Its totient is φ = 1344431453904.

The previous prime is 2021012222179. The next prime is 2021012222221. The reversal of 2021012222211 is 1122222101202.

It is a happy number.

2021012222211 is a `hidden beast` number, since 20 + 210 + 1 + 2 + 222 + 211 = 666.

It is not a de Polignac number, because 2021012222211 - 2⁵ = 2021012222179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021012222221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242497900 + ... + 242506233.

Almost surely, 2^{2021012222211} is an apocalyptic number.

2021012222211 is a deficient number, since it is larger than the sum of its proper divisors (904532714077).

2021012222211 is a wasteful number, since it uses less digits than its factorization.

2021012222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485004602 (or 485004599 counting only the distinct ones).

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

Adding to 2021012222211 its reverse (1122222101202), we get a palindrome (3143234323413).

The spelling of 2021012222211 in words is "two trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, two hundred eleven".