135246022181 has 2 divisors, whose sum is σ = 135246022182. Its totient is φ = 135246022180.

The previous prime is 135246022169. The next prime is 135246022237. The reversal of 135246022181 is 181220642531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82866833956 + 52379188225 = 287866^2 + 228865^2 .

It is a cyclic number.

It is not a de Polignac number, because 135246022181 - 2³⁰ = 134172280357 is a prime.

It is a super-2 number, since 2×135246022181² (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 (135266022181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67623011090 + 67623011091.

It is an arithmetic number, because the mean of its divisors is an integer number (67623011091).

Almost surely, 2^135246022181 is an apocalyptic number.

It is an amenable number.

135246022181 is a deficient number, since it is larger than the sum of its proper divisors (1).

135246022181 is an equidigital number, since it uses as much as digits as its factorization.

135246022181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 135246022181 in words is "one hundred thirty-five billion, two hundred forty-six million, twenty-two thousand, one hundred eighty-one".