211213822153 has 4 divisors (see below), whose sum is σ = 211216597380. Its totient is φ = 211211046928.

The previous prime is 211213822139. The next prime is 211213822159. The reversal of 211213822153 is 351228312112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93325973049 + 117887849104 = 305493^2 + 343348^2 .

It is a cyclic number.

It is not a de Polignac number, because 211213822153 - 2²⁹ = 210676951241 is a prime.

It is a super-2 number, since 2×211213822153² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211213822159) 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 3 ways as a sum of consecutive naturals, for example, 1270138 + ... + 1426771.

It is an arithmetic number, because the mean of its divisors is an integer number (52804149345).

Almost surely, 2^211213822153 is an apocalyptic number.

It is an amenable number.

211213822153 is a deficient number, since it is larger than the sum of its proper divisors (2775227).

211213822153 is an equidigital number, since it uses as much as digits as its factorization.

211213822153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775226.

The product of its digits is 5760, while the sum is 31.

The spelling of 211213822153 in words is "two hundred eleven billion, two hundred thirteen million, eight hundred twenty-two thousand, one hundred fifty-three".