211222102202001 has 36 divisors (see below), whose sum is σ = 337492331364916. Its totient is φ = 127198023226560.

The previous prime is 211222102201991. The next prime is 211222102202051. The reversal of 211222102202001 is 100202201222112.

It is a happy number.

211222102202001 is a `hidden beast` number, since 2 + 11 + 22 + 210 + 220 + 200 + 1 = 666.

211222102202001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 125095814021376 + 86126288180625 = 11184624^2 + 9280425^2 .

It is not a de Polignac number, because 211222102202001 - 2⁴¹ = 209023078946449 is a prime.

It is a super-2 number, since 2×211222102202001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211222102202051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 617535046 + ... + 617876991.

Almost surely, 2^{211222102202001} is an apocalyptic number.

It is an amenable number.

211222102202001 is a deficient number, since it is larger than the sum of its proper divisors (126270229162915).

211222102202001 is a wasteful number, since it uses less digits than its factorization.

211222102202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235412222 (or 1235412208 counting only the distinct ones).

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

Adding to 211222102202001 its reverse (100202201222112), we get a palindrome (311424303424113).

The spelling of 211222102202001 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred two million, two hundred two thousand, one".