221002023 has 48 divisors (see below), whose sum is σ = 349332480.
Its totient is φ = 123720960.
The previous prime is 221002021. The next prime is 221002031. The reversal of 221002023 is 320200122.
Adding to 221002023 its reverse (320200122), we get a palindrome (541202145).
221002023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 221002023 - 21 = 221002021 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (221002021) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 363786 + ... + 364392.
It is an arithmetic number, because the mean of its divisors is an integer number (7277760).
Almost surely, 2221002023 is an apocalyptic number.
221002023 is a deficient number, since it is larger than the sum of its proper divisors (128330457).
221002023 is a wasteful number, since it uses less digits than its factorization.
221002023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 708 (or 697 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 12.
The square root of 221002023 is about 14866.1367880159.
The cubic root of 221002023 is about 604.5962043835.
The spelling of 221002023 in words is "two hundred twenty-one million, two thousand, twenty-three".