690000022021201 has 2 divisors, whose sum is σ = 690000022021202. Its totient is φ = 690000022021200.

The previous prime is 690000022021169. The next prime is 690000022021259. The reversal of 690000022021201 is 102120220000096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681099340494400 + 8900681526801 = 26097880^2 + 2983401^2 .

It is a cyclic number.

It is not a de Polignac number, because 690000022021201 - 2⁵ = 690000022021169 is a prime.

It is a super-2 number, since 2×690000022021201² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (690000022021291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345000011010600 + 345000011010601.

It is an arithmetic number, because the mean of its divisors is an integer number (345000011010601).

Almost surely, 2^{690000022021201} is an apocalyptic number.

It is an amenable number.

690000022021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

690000022021201 is an equidigital number, since it uses as much as digits as its factorization.

690000022021201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 690000022021201 its reverse (102120220000096), we get a palindrome (792120242021297).

The spelling of 690000022021201 in words is "six hundred ninety trillion, twenty-two million, twenty-one thousand, two hundred one".