211321053 has 6 divisors (see below), whose sum is σ = 305241534. Its totient is φ = 140880696.

The previous prime is 211321051. The next prime is 211321069. The reversal of 211321053 is 350123112.

It can be written as a sum of positive squares in only one way, i.e., 141063129 + 70257924 = 11877^2 + 8382^2 .

It is not a de Polignac number, because 211321053 - 2¹ = 211321051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211321051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11740050 + ... + 11740067.

It is an arithmetic number, because the mean of its divisors is an integer number (50873589).

Almost surely, 2^211321053 is an apocalyptic number.

It is an amenable number.

211321053 is a deficient number, since it is larger than the sum of its proper divisors (93920481).

211321053 is a wasteful number, since it uses less digits than its factorization.

211321053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23480123 (or 23480120 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 211321053 is about 14536.8859457588. The cubic root of 211321053 is about 595.6359774673.

Adding to 211321053 its reverse (350123112), we get a palindrome (561444165).

The spelling of 211321053 in words is "two hundred eleven million, three hundred twenty-one thousand, fifty-three".