1002101111161 has 2 divisors, whose sum is σ = 1002101111162. Its totient is φ = 1002101111160.

The previous prime is 1002101111153. The next prime is 1002101111243. The reversal of 1002101111161 is 1611111012001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 896439708025 + 105661403136 = 946805^2 + 325056^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002101111161 - 2³ = 1002101111153 is a prime.

It is a super-2 number, since 2×1002101111161² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002104111161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501050555580 + 501050555581.

It is an arithmetic number, because the mean of its divisors is an integer number (501050555581).

Almost surely, 2^{1002101111161} is an apocalyptic number.

It is an amenable number.

1002101111161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002101111161 is an equidigital number, since it uses as much as digits as its factorization.

1002101111161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 1002101111161 its reverse (1611111012001), we get a palindrome (2613212123162).

The spelling of 1002101111161 in words is "one trillion, two billion, one hundred one million, one hundred eleven thousand, one hundred sixty-one".