100010111001001 has 4 divisors (see below), whose sum is σ = 102335927535952. Its totient is φ = 97684294466052.

The previous prime is 100010111000993. The next prime is 100010111001007. The reversal of 100010111001001 is 100100111010001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100010111001001 - 2³ = 100010111000993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100010111001007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162908267411 + ... + 1162908267496.

It is an arithmetic number, because the mean of its divisors is an integer number (25583981883988).

Almost surely, 2^{100010111001001} is an apocalyptic number.

It is an amenable number.

100010111001001 is a deficient number, since it is larger than the sum of its proper divisors (2325816534951).

100010111001001 is an equidigital number, since it uses as much as digits as its factorization.

100010111001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325816534950.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 100010111001001 its reverse (100100111010001), we get a palindrome (200110222011002).

The spelling of 100010111001001 in words is "one hundred trillion, ten billion, one hundred eleven million, one thousand, one".