100021100212221 has 8 divisors (see below), whose sum is σ = 133365795725760. Its totient is φ = 66678569086752.

The previous prime is 100021100212219. The next prime is 100021100212249. The reversal of 100021100212221 is 122212001120001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100021100212221 - 2¹ = 100021100212219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100021100212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021100212021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540989185 + ... + 541174038.

It is an arithmetic number, because the mean of its divisors is an integer number (16670724465720).

Almost surely, 2^{100021100212221} is an apocalyptic number.

It is an amenable number.

100021100212221 is a deficient number, since it is larger than the sum of its proper divisors (33344695513539).

100021100212221 is a wasteful number, since it uses less digits than its factorization.

100021100212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082194035.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100021100212221 its reverse (122212001120001), we get a palindrome (222233101332222).

The spelling of 100021100212221 in words is "one hundred trillion, twenty-one billion, one hundred million, two hundred twelve thousand, two hundred twenty-one".