12021150181 has 2 divisors, whose sum is σ = 12021150182. Its totient is φ = 12021150180.

The previous prime is 12021150173. The next prime is 12021150217. The reversal of 12021150181 is 18105112021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11225402500 + 795747681 = 105950^2 + 28209^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021150181 - 2³ = 12021150173 is a prime.

It is a super-2 number, since 2×12021150181² (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 (12021150101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010575090 + 6010575091.

It is an arithmetic number, because the mean of its divisors is an integer number (6010575091).

Almost surely, 2^12021150181 is an apocalyptic number.

It is an amenable number.

12021150181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021150181 is an equidigital number, since it uses as much as digits as its factorization.

12021150181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 22.

The spelling of 12021150181 in words is "twelve billion, twenty-one million, one hundred fifty thousand, one hundred eighty-one".