20212233010181 has 2 divisors, whose sum is σ = 20212233010182. Its totient is φ = 20212233010180.

The previous prime is 20212233010127. The next prime is 20212233010219. The reversal of 20212233010181 is 18101033221202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20197204456900 + 15028553281 = 4494130^2 + 122591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212233010181 is a prime.

It is a super-2 number, since 2×20212233010181² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20212233010181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212233010381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106116505090 + 10106116505091.

It is an arithmetic number, because the mean of its divisors is an integer number (10106116505091).

Almost surely, 2^{20212233010181} is an apocalyptic number.

It is an amenable number.

20212233010181 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212233010181 is an equidigital number, since it uses as much as digits as its factorization.

20212233010181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 20212233010181 its reverse (18101033221202), we get a palindrome (38313266231383).

The spelling of 20212233010181 in words is "twenty trillion, two hundred twelve billion, two hundred thirty-three million, ten thousand, one hundred eighty-one".