12020220010181 has 2 divisors, whose sum is σ = 12020220010182. Its totient is φ = 12020220010180.

The previous prime is 12020220010159. The next prime is 12020220010229. The reversal of 12020220010181 is 18101002202021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11773202064100 + 247017946081 = 3431210^2 + 497009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020220010181 is a prime.

It is a super-2 number, since 2×12020220010181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12020220060181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010110005090 + 6010110005091.

It is an arithmetic number, because the mean of its divisors is an integer number (6010110005091).

Almost surely, 2^{12020220010181} is an apocalyptic number.

It is an amenable number.

12020220010181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020220010181 is an equidigital number, since it uses as much as digits as its factorization.

12020220010181 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 20.

The spelling of 12020220010181 in words is "twelve trillion, twenty billion, two hundred twenty million, ten thousand, one hundred eighty-one".