211222213133 has 8 divisors (see below), whose sum is σ = 213588889080. Its totient is φ = 208859397120.

The previous prime is 211222213099. The next prime is 211222213157. The reversal of 211222213133 is 331312222112.

It can be written as a sum of positive squares in 4 ways, for example, as 14301050569 + 196921162564 = 119587^2 + 443758^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 211222213133 - 2¹⁰ = 211222212109 is a prime.

It is a super-2 number, since 2×211222213133² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211222213099 and 211222213108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222213183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854858 + ... + 1073883.

It is an arithmetic number, because the mean of its divisors is an integer number (26698611135).

Almost surely, 2^211222213133 is an apocalyptic number.

It is an amenable number.

211222213133 is a deficient number, since it is larger than the sum of its proper divisors (2366675947).

211222213133 is a wasteful number, since it uses less digits than its factorization.

211222213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929967.

The product of its digits is 864, while the sum is 23.

Adding to 211222213133 its reverse (331312222112), we get a palindrome (542534435245).

The spelling of 211222213133 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred thirteen thousand, one hundred thirty-three".