101223111001 has 4 divisors (see below), whose sum is σ = 101224640692. Its totient is φ = 101221581312.

The previous prime is 101223110969. The next prime is 101223111013. The reversal of 101223111001 is 100111322101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96171313225 + 5051797776 = 310115^2 + 71076^2 .

It is a cyclic number.

It is not a de Polignac number, because 101223111001 - 2⁵ = 101223110969 is a prime.

It is a super-2 number, since 2×101223111001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101223111071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660876 + ... + 799501.

It is an arithmetic number, because the mean of its divisors is an integer number (25306160173).

Almost surely, 2^101223111001 is an apocalyptic number.

It is an amenable number.

101223111001 is a deficient number, since it is larger than the sum of its proper divisors (1529691).

101223111001 is an equidigital number, since it uses as much as digits as its factorization.

101223111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529690.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 101223111001 its reverse (100111322101), we get a palindrome (201334433102).

The spelling of 101223111001 in words is "one hundred one billion, two hundred twenty-three million, one hundred eleven thousand, one".