20222631181 has 2 divisors, whose sum is σ = 20222631182. Its totient is φ = 20222631180.

The previous prime is 20222631173. The next prime is 20222631283. The reversal of 20222631181 is 18113622202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18094285225 + 2128345956 = 134515^2 + 46134^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222631181 - 2³ = 20222631173 is a prime.

It is a super-2 number, since 2×20222631181² (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 (20222631881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111315590 + 10111315591.

It is an arithmetic number, because the mean of its divisors is an integer number (10111315591).

Almost surely, 2^20222631181 is an apocalyptic number.

It is an amenable number.

20222631181 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222631181 is an equidigital number, since it uses as much as digits as its factorization.

20222631181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 20222631181 in words is "twenty billion, two hundred twenty-two million, six hundred thirty-one thousand, one hundred eighty-one".