211222202130 has 96 divisors (see below), whose sum is σ = 556111370880. Its totient is φ = 55616520960.

The previous prime is 211222202101. The next prime is 211222202131. The reversal of 211222202130 is 31202222112.

211222202130 is a `hidden beast` number, since 211 + 22 + 220 + 213 + 0 = 666.

It is a super-2 number, since 2×211222202130² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (211222202131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5933685 + ... + 5969175.

It is an arithmetic number, because the mean of its divisors is an integer number (5792826780).

Almost surely, 2^211222202130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211222202130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278055685440).

211222202130 is an abundant number, since it is smaller than the sum of its proper divisors (344889168750).

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

211222202130 is a wasteful number, since it uses less digits than its factorization.

211222202130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36336 (or 36333 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 211222202130 its reverse (31202222112), we get a palindrome (242424424242).

The spelling of 211222202130 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred two thousand, one hundred thirty".