12200220181 has 2 divisors, whose sum is σ = 12200220182. Its totient is φ = 12200220180.

The previous prime is 12200220167. The next prime is 12200220223. The reversal of 12200220181 is 18102200221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11982805156 + 217415025 = 109466^2 + 14745^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200220181 - 2²¹ = 12198123029 is a prime.

It is a super-2 number, since 2×12200220181² (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 (12200220281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100110090 + 6100110091.

It is an arithmetic number, because the mean of its divisors is an integer number (6100110091).

Almost surely, 2^12200220181 is an apocalyptic number.

It is an amenable number.

12200220181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200220181 is an equidigital number, since it uses as much as digits as its factorization.

12200220181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 12200220181 in words is "twelve billion, two hundred million, two hundred twenty thousand, one hundred eighty-one".