112202021161 has 2 divisors, whose sum is σ = 112202021162. Its totient is φ = 112202021160.

The previous prime is 112202021153. The next prime is 112202021213. The reversal of 112202021161 is 161120202211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79321089600 + 32880931561 = 281640^2 + 181331^2 .

It is a cyclic number.

It is not a de Polignac number, because 112202021161 - 2³ = 112202021153 is a prime.

It is a super-2 number, since 2×112202021161² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (112202021111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56101010580 + 56101010581.

It is an arithmetic number, because the mean of its divisors is an integer number (56101010581).

Almost surely, 2^112202021161 is an apocalyptic number.

It is an amenable number.

112202021161 is a deficient number, since it is larger than the sum of its proper divisors (1).

112202021161 is an equidigital number, since it uses as much as digits as its factorization.

112202021161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 112202021161 its reverse (161120202211), we get a palindrome (273322223372).

The spelling of 112202021161 in words is "one hundred twelve billion, two hundred two million, twenty-one thousand, one hundred sixty-one".