2110021112161 has 2 divisors, whose sum is σ = 2110021112162. Its totient is φ = 2110021112160.

The previous prime is 2110021112137. The next prime is 2110021112263. The reversal of 2110021112161 is 1612111200112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1904866468561 + 205154643600 = 1380169^2 + 452940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110021112161 - 2¹³ = 2110021103969 is a prime.

It is not a weakly prime, because it can be changed into another prime (2110021142161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055010556080 + 1055010556081.

It is an arithmetic number, because the mean of its divisors is an integer number (1055010556081).

Almost surely, 2^{2110021112161} is an apocalyptic number.

It is an amenable number.

2110021112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110021112161 is an equidigital number, since it uses as much as digits as its factorization.

2110021112161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 2110021112161 its reverse (1612111200112), we get a palindrome (3722132312273).

The spelling of 2110021112161 in words is "two trillion, one hundred ten billion, twenty-one million, one hundred twelve thousand, one hundred sixty-one".