211225530497 has 2 divisors, whose sum is σ = 211225530498. Its totient is φ = 211225530496.

The previous prime is 211225530469. The next prime is 211225530541. The reversal of 211225530497 is 794035522112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128652059761 + 82573470736 = 358681^2 + 287356^2 .

It is a cyclic number.

It is not a de Polignac number, because 211225530497 - 2¹² = 211225526401 is a prime.

It is not a weakly prime, because it can be changed into another prime (211225530457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105612765248 + 105612765249.

It is an arithmetic number, because the mean of its divisors is an integer number (105612765249).

Almost surely, 2^211225530497 is an apocalyptic number.

It is an amenable number.

211225530497 is a deficient number, since it is larger than the sum of its proper divisors (1).

211225530497 is an equidigital number, since it uses as much as digits as its factorization.

211225530497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 211225530497 in words is "two hundred eleven billion, two hundred twenty-five million, five hundred thirty thousand, four hundred ninety-seven".