20132221069 has 2 divisors, whose sum is σ = 20132221070. Its totient is φ = 20132221068.

The previous prime is 20132221061. The next prime is 20132221079. The reversal of 20132221069 is 96012223102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20105822025 + 26399044 = 141795^2 + 5138^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132221069 - 2³ = 20132221061 is a prime.

It is a super-2 number, since 2×20132221069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066110534 + 10066110535.

It is an arithmetic number, because the mean of its divisors is an integer number (10066110535).

Almost surely, 2^20132221069 is an apocalyptic number.

It is an amenable number.

20132221069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132221069 is an equidigital number, since it uses as much as digits as its factorization.

20132221069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 20132221069 in words is "twenty billion, one hundred thirty-two million, two hundred twenty-one thousand, sixty-nine".