211211020022122 has 8 divisors (see below), whose sum is σ = 316816970847876. Its totient is φ = 105605363072832.

The previous prime is 211211020022099. The next prime is 211211020022161. The reversal of 211211020022122 is 221220020112112.

It can be written as a sum of positive squares in 2 ways, for example, as 185224179064681 + 25986840957441 = 13609709^2 + 5097729^2 .

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

It is a super-2 number, since 2×211211020022122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211211020022122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71663473 + ... + 74552500.

Almost surely, 2^{211211020022122} is an apocalyptic number.

211211020022122 is a deficient number, since it is larger than the sum of its proper divisors (105605950825754).

211211020022122 is a wasteful number, since it uses less digits than its factorization.

211211020022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146938232.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211211020022122 its reverse (221220020112112), we get a palindrome (432431040134234).

The spelling of 211211020022122 in words is "two hundred eleven trillion, two hundred eleven billion, twenty million, twenty-two thousand, one hundred twenty-two".