111210110001 has 10 divisors (see below), whose sum is σ = 166128682962. Its totient is φ = 74140073280.

The previous prime is 111210109999. The next prime is 111210110003. The reversal of 111210110001 is 100011012111.

It is an interprime number because it is at equal distance from previous prime (111210109999) and next prime (111210110003).

It can be written as a sum of positive squares in only one way, i.e., 87701861025 + 23508248976 = 296145^2 + 153324^2 .

It is not a de Polignac number, because 111210110001 - 2¹ = 111210109999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (111210110003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 686482080 + ... + 686482241.

Almost surely, 2^111210110001 is an apocalyptic number.

It is an amenable number.

111210110001 is a deficient number, since it is larger than the sum of its proper divisors (54918572961).

111210110001 is an equidigital number, since it uses as much as digits as its factorization.

111210110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372964333 (or 1372964324 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111210110001 its reverse (100011012111), we get a palindrome (211221122112).

The spelling of 111210110001 in words is "one hundred eleven billion, two hundred ten million, one hundred ten thousand, one".