111002681 has 2 divisors, whose sum is σ = 111002682. Its totient is φ = 111002680.

The previous prime is 111002677. The next prime is 111002687. The reversal of 111002681 is 186200111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97614400 + 13388281 = 9880^2 + 3659^2 .

It is a cyclic number.

It is not a de Polignac number, because 111002681 - 2² = 111002677 is a prime.

It is a super-2 number, since 2×111002681² = 24643190378375522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111002687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55501340 + 55501341.

It is an arithmetic number, because the mean of its divisors is an integer number (55501341).

Almost surely, 2^111002681 is an apocalyptic number.

It is an amenable number.

111002681 is a deficient number, since it is larger than the sum of its proper divisors (1).

111002681 is an equidigital number, since it uses as much as digits as its factorization.

111002681 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 20.

The square root of 111002681 is about 10535.7809867138. The cubic root of 111002681 is about 480.5934225904.

Adding to 111002681 its reverse (186200111), we get a palindrome (297202792).

The spelling of 111002681 in words is "one hundred eleven million, two thousand, six hundred eighty-one".