211332097 has 4 divisors (see below), whose sum is σ = 213424596. Its totient is φ = 209239600.

The previous prime is 211332089. The next prime is 211332103. The reversal of 211332097 is 790233112.

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 169806961 + 41525136 = 13031^2 + 6444^2 .

It is a cyclic number.

It is not a de Polignac number, because 211332097 - 2³ = 211332089 is a prime.

It is a super-2 number, since 2×211332097² = 89322510444834818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211332067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046098 + ... + 1046299.

It is an arithmetic number, because the mean of its divisors is an integer number (53356149).

Almost surely, 2^211332097 is an apocalyptic number.

It is an amenable number.

211332097 is a deficient number, since it is larger than the sum of its proper divisors (2092499).

211332097 is a wasteful number, since it uses less digits than its factorization.

211332097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092498.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 211332097 is about 14537.2658020688. The cubic root of 211332097 is about 595.6463536052.

The spelling of 211332097 in words is "two hundred eleven million, three hundred thirty-two thousand, ninety-seven".