100221014021 has 4 divisors (see below), whose sum is σ = 100518406092. Its totient is φ = 99923621952.

The previous prime is 100221014011. The next prime is 100221014027. The reversal of 100221014021 is 120410122001.

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 69543491521 + 30677522500 = 263711^2 + 175150^2 .

It is a cyclic number.

It is not a de Polignac number, because 100221014021 - 2²⁶ = 100153905157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100221013987 and 100221014005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221014027) 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, 148695530 + ... + 148696203.

It is an arithmetic number, because the mean of its divisors is an integer number (25129601523).

Almost surely, 2^100221014021 is an apocalyptic number.

It is an amenable number.

100221014021 is a deficient number, since it is larger than the sum of its proper divisors (297392071).

100221014021 is an equidigital number, since it uses as much as digits as its factorization.

100221014021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297392070.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100221014021 its reverse (120410122001), we get a palindrome (220631136022).

The spelling of 100221014021 in words is "one hundred billion, two hundred twenty-one million, fourteen thousand, twenty-one".