212022201121 has 4 divisors (see below), whose sum is σ = 212023156500. Its totient is φ = 212021245744.

The previous prime is 212022201119. The next prime is 212022201137. The reversal of 212022201121 is 121102220212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11174815521 + 200847385600 = 105711^2 + 448160^2 .

It is a cyclic number.

It is not a de Polignac number, because 212022201121 - 2¹ = 212022201119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212022201095 and 212022201104.

It is not an unprimeable number, because it can be changed into a prime (212022201101) 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, 48135 + ... + 652963.

It is an arithmetic number, because the mean of its divisors is an integer number (53005789125).

Almost surely, 2^212022201121 is an apocalyptic number.

It is an amenable number.

212022201121 is a deficient number, since it is larger than the sum of its proper divisors (955379).

212022201121 is an equidigital number, since it uses as much as digits as its factorization.

212022201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955378.

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

Adding to 212022201121 its reverse (121102220212), we get a palindrome (333124421333).

The spelling of 212022201121 in words is "two hundred twelve billion, twenty-two million, two hundred one thousand, one hundred twenty-one".