2021211201222 has 24 divisors (see below), whose sum is σ = 4380556396320. Its totient is φ = 673542380880.

The previous prime is 2021211201211. The next prime is 2021211201227. The reversal of 2021211201222 is 2221021121202.

It is a happy number.

2021211201222 is a `hidden beast` number, since 20 + 212 + 11 + 201 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2021211201195 and 2021211201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021211201227) 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 in 11 ways as a sum of consecutive naturals, for example, 16159822 + ... + 16284417.

It is an arithmetic number, because the mean of its divisors is an integer number (182523183180).

Almost surely, 2^{2021211201222} is an apocalyptic number.

2021211201222 is an abundant number, since it is smaller than the sum of its proper divisors (2359345195098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021211201222 is a wasteful number, since it uses less digits than its factorization.

2021211201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32447708 (or 32447705 counting only the distinct ones).

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

Adding to 2021211201222 its reverse (2221021121202), we get a palindrome (4242232322424).

The spelling of 2021211201222 in words is "two trillion, twenty-one billion, two hundred eleven million, two hundred one thousand, two hundred twenty-two".