221000012069 has 2 divisors, whose sum is σ = 221000012070. Its totient is φ = 221000012068.

The previous prime is 221000012033. The next prime is 221000012131. The reversal of 221000012069 is 960210000122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198051700900 + 22948311169 = 445030^2 + 151487^2 .

It is a cyclic number.

It is not a de Polignac number, because 221000012069 - 2¹⁶ = 220999946533 is a prime.

It is a super-2 number, since 2×221000012069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221000012269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500006034 + 110500006035.

It is an arithmetic number, because the mean of its divisors is an integer number (110500006035).

Almost surely, 2^221000012069 is an apocalyptic number.

It is an amenable number.

221000012069 is a deficient number, since it is larger than the sum of its proper divisors (1).

221000012069 is an equidigital number, since it uses as much as digits as its factorization.

221000012069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 221000012069 in words is "two hundred twenty-one billion, twelve thousand, sixty-nine".