22211213020181 has 2 divisors, whose sum is σ = 22211213020182. Its totient is φ = 22211213020180.

The previous prime is 22211213020177. The next prime is 22211213020207. The reversal of 22211213020181 is 18102031211222.

It is an a-pointer prime, because the next prime (22211213020207) can be obtained adding 22211213020181 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14233604835025 + 7977608185156 = 3772745^2 + 2824466^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211213020181 - 2² = 22211213020177 is a prime.

It is a super-2 number, since 2×22211213020181² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22211213020181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22211213020141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105606510090 + 11105606510091.

It is an arithmetic number, because the mean of its divisors is an integer number (11105606510091).

Almost surely, 2^{22211213020181} is an apocalyptic number.

It is an amenable number.

22211213020181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211213020181 is an equidigital number, since it uses as much as digits as its factorization.

22211213020181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

The spelling of 22211213020181 in words is "twenty-two trillion, two hundred eleven billion, two hundred thirteen million, twenty thousand, one hundred eighty-one".