100221023 has 12 divisors (see below), whose sum is σ = 116750592. Its totient is φ = 85780800.

The previous prime is 100221019. The next prime is 100221073. The reversal of 100221023 is 320122001.

It is a happy number.

It is not a de Polignac number, because 100221023 - 2² = 100221019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100220995 and 100221013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55511 + ... + 57287.

It is an arithmetic number, because the mean of its divisors is an integer number (9729216).

Almost surely, 2^100221023 is an apocalyptic number.

100221023 is a deficient number, since it is larger than the sum of its proper divisors (16529569).

100221023 is a wasteful number, since it uses less digits than its factorization.

100221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 2935 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 100221023 is about 10011.0450503431. The cubic root of 100221023 is about 464.5005976920.

Adding to 100221023 its reverse (320122001), we get a palindrome (420343024).

The spelling of 100221023 in words is "one hundred million, two hundred twenty-one thousand, twenty-three".