148611021001 has 3 divisors (see below), whose sum is σ = 148611406503. Its totient is φ = 148610635500.

The previous prime is 148611020983. The next prime is 148611021011. The reversal of 148611021001 is 100120116841.

The square root of 148611021001 is 385501.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 100120116841 = 97 ⋅1032166153.

It can be written as a sum of positive squares in only one way, i.e., 47219724601 + 101391296400 = 217301^2 + 318420^2 .

It is not a de Polignac number, because 148611021001 - 2⁵ = 148611020969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148611021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 192751 + ... + 578251.

It is an arithmetic number, because the mean of its divisors is an integer number (49537135501).

Almost surely, 2^148611021001 is an apocalyptic number.

148611021001 is the 385501-st square number.

148611021001 is the 192751-st centered octagonal number.

It is an amenable number.

148611021001 is a deficient number, since it is larger than the sum of its proper divisors (385502).

148611021001 is an frugal number, since it uses more digits than its factorization.

148611021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771002 (or 385501 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 25.

Multiplying 148611021001 by its sum of digits (25), we get a square (3715275525025 = 1927505²).

Adding to 148611021001 its reverse (100120116841), we get a palindrome (248731137842).

The spelling of 148611021001 in words is "one hundred forty-eight billion, six hundred eleven million, twenty-one thousand, one".