100021200221 has 16 divisors (see below), whose sum is σ = 110198859264. Its totient is φ = 90396244224.

The previous prime is 100021200211. The next prime is 100021200239. The reversal of 100021200221 is 122002120001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100021200221 - 2⁶ = 100021200157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021200211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1138625 + ... + 1223318.

It is an arithmetic number, because the mean of its divisors is an integer number (6887428704).

Almost surely, 2^100021200221 is an apocalyptic number.

It is an amenable number.

100021200221 is a deficient number, since it is larger than the sum of its proper divisors (10177659043).

100021200221 is a wasteful number, since it uses less digits than its factorization.

100021200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362060.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100021200221 its reverse (122002120001), we get a palindrome (222023320222).

The spelling of 100021200221 in words is "one hundred billion, twenty-one million, two hundred thousand, two hundred twenty-one".