212132221097 has 2 divisors, whose sum is σ = 212132221098. Its totient is φ = 212132221096.

The previous prime is 212132221057. The next prime is 212132221157. The reversal of 212132221097 is 790122231212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193301794921 + 18830426176 = 439661^2 + 137224^2 .

It is a cyclic number.

It is not a de Polignac number, because 212132221097 - 2⁸ = 212132220841 is a prime.

It is not a weakly prime, because it can be changed into another prime (212132221057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106066110548 + 106066110549.

It is an arithmetic number, because the mean of its divisors is an integer number (106066110549).

Almost surely, 2^212132221097 is an apocalyptic number.

It is an amenable number.

212132221097 is a deficient number, since it is larger than the sum of its proper divisors (1).

212132221097 is an equidigital number, since it uses as much as digits as its factorization.

212132221097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 212132221097 in words is "two hundred twelve billion, one hundred thirty-two million, two hundred twenty-one thousand, ninety-seven".